• Title/Summary/Keyword: dry heat

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A Case Study of Taeeumin's Chronic Idiopathic Urticaria Patient (태음인(太陰人) 만성 특발성 두드러기 환자 치험 1예)

  • Im, Mi-Kyung;Song, Jung-Mo
    • Journal of Sasang Constitutional Medicine
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    • v.20 no.3
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    • pp.190-198
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    • 2008
  • 1. Objectives The purpose of this case study is to evaluate the effects of Sasangconstitutional diagnosis and treatment of chronic idiopathic urticaria patient who was diagnosed Taeeumin Dry-Heat Syndrome(煥熱證). 2. Methods Chronic idiopathic urticaria patient was diagnosed Taeeumin Dry-Heat Syndrome(煥熱證) based on their Nature & Emotion(性情), physical characteristics, symptoms. She was medicated Cheongsimyeonjatang(淸心蓮子湯). 3. Results and Conclusions Chronic idiopathic urticaria patient who was treated with Cheongsimyeonjatang(淸心蓮子湯) showed improvement in urticaria symptom and general condition. This case study describe the effectiveness on Chronic idiopathic urticaria symptom by using Cheongsimyeonjang(淸心蓮子湯).

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Data Reduction on the Air-side Heat Transfer Coefficients of Heat Exchangers under Dehumidifying Conditions (제습이 수반된 공조용 증발기 습표면의 열전달계수 데이터 리덕션)

  • Kim, Nae-Hyun;Oh, Wang-Kyu;Cho, Jin-Pyo;Park, Hwan-Young;Yoon, Baek
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.15 no.1
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    • pp.73-85
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    • 2003
  • Four different methods of reducing the heat transfer coefficients from experimental data under dehumidifying conditions are compared. The four methods consist of two different heat and mass transfer models and two different fin efficiency models. Data are obtained from two heat exchanger samples having plain fins or wave fins. Comparison of the data with the reduction methods revealed that the single potential heat and mass transfer model yielded the humidity independent heat transfer coefficients. Two different fin efficiency models - enthalpy model and humidity model - yielded approximately the same fin efficiencies and accordingly approximately the same heat transfer coefficients. The heat transfer coefficients under wet conditions were approximately the same as those of the dry conditions for the plain fin configuration. For the wave fin configuration, however, wet surface heat transfer coefficients were approximately 12% higher. The pressure drops of the wet surface were 10% to 45% larger than those of the dry surface.

Effectiveness of Ventilation Control in a Dry Room with a Heat and Moisture Source

  • Lee, Kwan-Soo;Lim, Kwang-Ok;Ahn, Kang-Ho;Jung, Young-Sick
    • International Journal of Air-Conditioning and Refrigeration
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    • v.9 no.4
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    • pp.1-9
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    • 2001
  • The temperature and moisture distributions in a dry room with a heat and moisture source -i.e., workers- are studied numerically by using a standard $k-\varepsilon$ turbulence model. In order to evaluate the effectiveness of heat and moisture ventilation inside the room, the heat removal capacity and the moisture exhaust efficiency are introduced. The effectiveness of ventilation control is analyzed by evaluating the temperature and humidity distributions in the room quantitatively. It is found that the mean absolute humidity inside the room is almost constant regardless of the models and the heat generation rates in this study range. This results from the fact that the moisture generation by the workers was relatively small. Through the modification of the design, 40% improvement in critical decay time was achieved.

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The Production of Anti-cancer Substances by in vitro Grown Cultures of Panax ginseng C.A. Meyer

  • Yang, Deok-Chun;Park, Kyung-Hwa;Kim, Yong-Hae;Yoon, Eui-Soo;Kang, Tae-Jin;Park, Kwang-Tae
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 1999.10a
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    • pp.46-57
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    • 1999
  • Ginseng(Panax ginseng C.A. Meyer) is important medicinal plant but requires 4-year cultivation for root harvest because of slow growth. In contrast, ginseng callus and hairy roots grow vigorously and may Produce the same or more biologically active compounds for human health than natural ginseng roots. Therefore, ginseng callus and hairy roots can be used for commercial purposes. Polyacetylene, one of anti-cancer compounds in ginseng, was not detected in the callus cultured on the medium containing 2, 4-B, but cells derived from the callus growth was excellent, The ginseng calli cultured on the medium containing 2mg11 CPA and 0.05mg/1 BA was grown vigorously and produced panaxydol, one of ginseng polyacetylene. The biosynthesis of polyacetylene in callus was not affected by addition of NAA and sucrose in media. The SH medium was better than the MS medium for ginseng callus growth and biosynthesis of panaxydol. Another ginseng anti-cancer compounds, ginsenoside-Rg$_3$, Rh$_1$and Rh$_2$ were detected in ginseng hairy roots by heat treatment. Those of Panax ginseng were obtained after root disks of three-year old roots were infected with Agrobacterium rhizogenes Rl000 $A_4$T in dark condition after one month of culture. The optimum growth of hairy roots was achieved in the culture of 1/2 MS liquid medium in dark(22$^{\circ}C$) under 60 rpm gyratory shaking. Hairy roots grew well in 5 ι Erlenmeyer flasks, 1ι roller drums, 10ι jar-fermenters, and especially in 20ι air-lift .culture vessels. All heat treatments had remarkably different ginsenoside contents. Eleven ginsenosides were determined in heat treatment, eight in freeze dried hairy roots. Contents of ginsenoside-Rbl , Rb2, Rc, Rd. Re, Rf, and Rg$_1$tested in all heat treatments were less than those of freeze dried hairy roots. Contents of glnsenoside-Rg$_2$ in heat treatment for 1 hour at 105$^{\circ}C$ was 4.92mg/g dry wt, 3.9 times higher than 1.27 mg/g dry wt of freeze dried hairy roots. The optimum condition of heat treatment for the production of ginsenoside-Rg$_3$and Rhl was 2 hours at 105$^{\circ}C$, and ginsenoside content was 2.58mg/g dry wt and 3.62mg/g dry wt, respectively. The production of ginsenoside-Rh2 was the highest in heat treatment for 2 hours at 105$^{\circ}C$ among treatments examined, and ginsenoside-Rh$_2$content was 1.08mg/g dry wt.

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A Study on Heat Transfer in Sand Molds (사형(砂型)의 열전달(熱傳達)에 관(關)한 연구(硏究))

  • Lee, Jong-Nam;Kim, Kwang-Bea
    • Journal of Korea Foundry Society
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    • v.2 no.1
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    • pp.2-11
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    • 1982
  • In order to investigate the relationship between the thermal characteristics of the various molds as green sand mold, dry sand mold, $CO_2$ mold and shell mold, and the solidification characteristics of molten metal, the thermal analysis of rarious molds and melt were performed. The structure of Al-Castings was a/so observed. Results obtained in this experiment were as follows : 1) The heating rate of the molds was increased in the order of green sand mold, $CO_2$ mold, dry sand mold and shell mold, On the other hand the solidification time of the melts was shortened in the order of dry sand mold castings, $CO_2$ mold castings, green sand mold castings and shell mold castings. 2) The arrest temperature period in the heating curve of the green sand mold was resulted from the eraporation of moisture contained in mold, which was transfered to the outer side of the mold. 3) The temperature fluctuation of the melt in the shell mold was considered to be resulted from the combution heat of resin contained in the mold. 4) The amounts of heat absorption of the molds were increased in the order of dry sand mold, $CO_2$ mold, green sand mold and shell mold. 5) The higher the solidification rate was, the longer was its shrinkage pipe and the finer its grain size.

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Dry-heat Treatment Effect for Seed Longevity Prediction in Rice Germplasm (벼 유전자원의 저장수명 예측을 위한 건열처리 효과)

  • Na, Young-Wang;Baek, Hyung-Jin;Choi, Yu-Mi;Lee, Sok-Young;Lee, Jung-Ro;Chung, Jong-Wook;Park, Yong-Jin;Kim, Seok-Hyeon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.59 no.3
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    • pp.230-238
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    • 2014
  • The purpose of this study was to develop the cost-effective and efficiency seed longevity prediction method of rice (Oryza sativa L.) germplasm for viability monitoring. To find an optimum predicting method for rice seed longevity at genebank, an accelerated ageing (AA) test, a controlled deterioration (CD) test and a dry-heat treatment (DHT) were conducted to the four groups of rice germplasm based on ecotype, such as Indica, Japonica, Javanica and Tongil type. Among the three artificial aging treatments, the dry-heat treatment of 36 hours at $90^{\circ}C$ is suggested as a routine predictive test method of rice germplasm longevity at a genebank. The distribution of germination rate on 3,066 accessions which conserved 26.5 years at $4^{\circ}C$ showed similar trend with the result of distribution by dry-heat treatment at $90^{\circ}C$ on 36 hours using 106 accessions of rice selected samples which composed four ecotype groups. The results show that the dry-heat treatment affect not only predicting the rice seed longevity but also determining effective interval for monitoring germination of rice germplasm in genebanks.

The Study on Clinical Characteristics of Taeeumin Dry-Heat Symptomatic Patten (태음인(太陰人) 조열병증(燥熱病證)의 임상적 특징에 대한 연구(硏究))

  • Kim, Yun-Hee;Kim, Sang-Hyuk;Jang, Hyun-Su;Hwang, Min-U;Lee, Jun-Hee;Lee, Eui-Ju;Koh, Byung-Hee
    • Journal of Sasang Constitutional Medicine
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    • v.21 no.1
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    • pp.85-98
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    • 2009
  • 1. Objective The object of this study was to understand the clinical characteristics of the Taeeumin Symptomatic Pattem. 2. Methods The patients visiting the department of Sasang Constitution of Traditional Korean Medicine clinic from June to November of 2008 were used in this study. Those who showed a favorable turn after over ten days of medication and who showed up for at least two follow-up sessions were chosen among first-time visitors. Of these, 75 patients identified and verified to be of the TE type were chosen for the study sample. The Taeeumin were verified into two groups according to clinical symptoms into Exterior Cold Disease and Interior Heat Disease groups, of which the Interior Heat Disease group was further subdivided into the Galgeun-medicament group and the Cheongshimyeonja-tang group, based on questionnaire results. The Exterior Cold Disease group was set as the control group in order to contrast and compare it with the study group, the Interior Heat Disease group. 3. Results and Conclusions The questionnaire items shown to differentiate the Exterior Cold Symptomatic Patterm and the Interior Heat Symptomaic Pattern (indicating Heat-affceted Liver Symptomatic Pattern) were related to "dryness of stool," "dark urine colorm," "dryness of nose," and "dryness of lips." The items shown to differentiate the Galgeun-medicament group and the Cheongshimyeonja-tang group (of the Dry - Heat Symptomatic Pattern) were related to "nausea," "stifling sensations and palptation," "disturbed sleep," and "dizziness." Therefore, the sleep pattern, palpitation, dizziness, and nausea can be said to be indicators of the Interior Heat Symptomatic Pattern, and Dry-Heat symptoms are better distinctions between the Chongshimyeonja-tang group and the Galgeun-medicament group than Heat-affected Liver symptoms.

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Effects of Long-term Heat Exposure on Adaptive Mechanism of Blood Acid-base in Buffalo Calves

  • Korde, J.P.;Singh, G.;Varshney, V.P.;Shukla, D.C.
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.5
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    • pp.742-747
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    • 2007
  • In order to investigate the mechanism of adaptation to long-term heat stress, six female buffalo calves of about 7 to 8 months age, were exposed to the cool-comfort environment (THI 65) for 21 days to obtain normal values of blood acid-base. An adaptive response of acid-base regulation was determined to long term (21 days) exposure of buffalo calves to hot-dry (THI 80) and hot-humid (THI 84) conditions. Higher rectal temperature and respiratory rate was recorded under hot-humid exposure compared to hot-dry. Significant reduction in the rectal temperature and respiratory rate on day 21 of hot-dry exposure indicated early thermal adaptation compared to hot-humid. Decreasing rectal temperature and respiratory rate from day 1 to 21 was associated with concurrent decrease in blood pH and pCO2. Increased plasma chloride concentration with low base excess in blood and in extracellular fluid suggested compensatory response to respiratory alkalosis. Reduced fractional excretion of sodium with increased fractional excretion of potassium and urine flow rate indicated renal adaptive response to heat stress.

A Study On the Structure and Mechanical Properties of Polypropylene filament treated with Dry heat treatment at Different draw ratio (연신비를 달리한 Polypropylene filament의 건열처리에 따른 구조와 물성에 관한 연구)

  • Lee, Eun-Woo;Cho, In-Sul
    • Journal of the Korean Society of Industry Convergence
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    • v.2 no.2
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    • pp.61-68
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    • 1999
  • The variety of crystalline structure and mechanical properties of PP filament treated with dry heat treatment at different draw ratio has been studied. Crystalline structure and mechanical properties of annealed PP filament at different draw ratio has been examined by XRD, UTM, and density method. Heat treatment has been carried out $100^{\circ}C$, $120^{\circ}C$ $140^{\circ}C$ for 30min. in dry oven. From the results of this study, it found the following facts. It was found that the crystallinity and crystallite size of (110) plane of sample were increased with increasing of annealed temperature and draw ratio. The crystalline form of annealed sample which was undrawn showed ${\alpha}$, ${\beta}$ mixing form below $120^{\circ}C$ and showed ${\alpha}$ form at $140^{\circ}C$. But the crystalline form of annealed sample which was drawn showed ${\alpha}$ form at $120^{\circ}C$. Initial modulus and tensile strength were increased with increasing of annealing temperature, and the degree of orientation was decreased with decreasing of annealing temperature.

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Wet surface performance test of fin-tube heat exchangers with slit-wavy fin (물결형 슬릿핀이 장착된 핀-관 열교환기의 습표면 성능 실험)

  • Kim, N.H.;Kim, J.S.;Cho, J.P.;Yun, J.H.;Peck, J.H.;Lee, S.G.;Nam, S.B.;Kwon, H.J.
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.9 no.2
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    • pp.153-162
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    • 1997
  • In this study, the wet surface heat transfer coefficients and friction factors of the heat exchanger with slit-wavy fin were measured. Four sample cores of two or three row with fins of 12 fpi or 16 fpi were tested. Tests were conducted in a closed loop wind tunnel, where the heat exchanger was mounted at 45 degree inclination angle. The wet surface heat transfer coefficient was reduced following the procedure given in ARI 420-81. During the course, new definitions of the $\varepsilon$-NTU applicable to enthalpy driving system were introduced. The wet surface heat transfer coefficients were approximately equal to the dry surface values. However, the friction factors were approximately 120% to 170% higher than those of the dry surface. Both the heat transfer coefficient and the friction factor of the wet surface increased as the relative humidity increased, fin pitch decreased, and the number of row decreased, although the difference was not large.

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