• Title/Summary/Keyword: root temperature

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Natural Dyeing of Silk Fabrics with Rumex crispus L. Root (소루쟁이뿌리를 이용한 견직물의 천연염색)

  • Han, Mi-Ran;Lee, Jeong-Sook
    • Fashion & Textile Research Journal
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    • v.11 no.1
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    • pp.166-173
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    • 2009
  • The natural dyeing of silk fabrics with Rumex crispus L. root extract was investigated. The dyeability of Rumex crispus L. root extract was evaluated with condition of concentration, temperature, time, repeat-numbers, pH, mordants variables, methods of mordanting, color fastness and antibacterial activity, etc. The wavelength of maximum absorption of the Rumex crispus L. distilled water extract appears at 274 nm and 336 nm, methanol extract was 274 nm and 356 nm. Optical dyeing temperature of silk fabrics was $70^{\circ}C$. The K/S values of the dyed fabrics were increased with increasing dyeing time. Surface colors of dyed fabrics were various by the used mordants; RP-YR-Y range. The color fastness was improved by adding mordants were added except Sn. Dyed silk fabrics with mordants showed antibacterial activity.

Effect of root gaps on toughness of FCAW weld metal (FCAW 용접부의 인성에 미치는 Root Gap의 영향)

  • 한종만;이은배;안성철;한용섭
    • Journal of Welding and Joining
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    • v.9 no.4
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    • pp.40-49
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    • 1991
  • Both impact and fracture toughnesses were investigated with root gaps in FCAW weld metals at room temperature and 0.deg.C. The maximum impact value was obtained at the root gap of 16mm for 1G position weld metal, and the impact value of 3G position weld metals also showed the maximum impact value at the root gap of 12mm. However, the fracture toughnes(CTOD)values tend to decrease with increasing root gaps at both temperatures in 1G weld metal. Bending test also showed satisfactory results with all of root gaps investigated. Based on this result, it becomes possible to apply wide root gaps in real projects in both aspects of toughness and bending resistance.

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Effect of Root Zone Temperature on the Growth and Quality of Single-Stemmed Rose in Cutted Rose Production Factory (식물생산공장식 양액재배시 근권부 온도가 장미의 생육 및 품질에 미치는 영향)

  • Lee Hye Jin;Lee Yong-Beom;Bae Jong Hyang
    • Journal of Bio-Environment Control
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    • v.13 no.4
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    • pp.266-270
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    • 2004
  • A rose factory type is a system that enables year-round, planned and mass production of high quality cut-rose. Conversion of a conventional system to a rose factory is essential to increase cut-rose export. Controlling root Bone in culled rose production factory is very important for economic and efficient production of rose. This study was conducted to determine optimum root zone temperature of nutrient solution in single-stemmed rose production system. The optimum temperature of the nutrient solution for growth, photosynthetic and transpiration rates for 'Red Velvet' was $15\~20^{\circ}C$. Whereas the optimum temperature for 'Vital' was $10\~15^{\circ}C$. However, growth was almost sloped at $30^{\circ}C$, resulting in concluding the adaptation of 'Vital' to high temperature was poor as compared with 'Red Velvet'.

A study on the methods of regional body temperature palpation in Hwangdineijing (『황제내경』의 체열 분포 진단 방법 연구)

  • Kim, Kiwang
    • Journal of Korean Medical classics
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    • v.30 no.1
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    • pp.51-55
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    • 2017
  • Objectives : Though regional body temperature palpation is one of well stylized diagnosis methods in Huangdineijing, it has not been thoroughly reconstructed. So I tried to find and reconstruct the methods in Huangdineijing to diagnose regional body temperature as a objective sign. Material and Methods : Huangdineijing(in Zhonghuayidian) was used for text search. "Heat(熱)", "Cold and Heat(寒熱)", "Cold and Warmth(寒溫)", "Root and Terminal(本末)" was used as searching keywords. By classifying and analysing searched sentences I reconstructed the original palpation methods. Results : Two types of regional temperature palpation method was found in Huangdineijing. One is the method palpating the Root(origin) points and Terminal points of the meridians, while the other method is that palpating the skin in anterior side of forearm. It was proved that they had been collaboratively used to diagnose the diseases related to meridians and it's collaterals. Conclusions :In the era of Huangdineijing, there was at least two types of regional temperature palpation method and their clinical usage was in complementary relations.

Studies on Growth Responses and Yields of Panax ginseng C. A. Meyer Grown under Hydroponic Culture with different Temperatures and Growth Stages (온도 및 생육시기에 따른 수경재배 인삼의 생장특성과 수량에 관한 연구)

  • Lee, Gyeong-A;Chang, Yoon-Kee;Park, Seong-Yong;Kim, Gyeong-Ae;Kim, Sun-Ho;Song, Beom-Heon
    • Korean Journal of Medicinal Crop Science
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    • v.20 no.3
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    • pp.184-189
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    • 2012
  • This study was carried out to have the basic and applied informations relating to increase the productivity and quality of ginseng. 2 years-old ginseng was cultivated under hydroponic culture with the controlled environment conditions in a greenhouse. Major growth characters and yields were investigated with two different temperatures and several growth stages. The plant height and stem diameter were higher at low temperature than those at high temperature. They were not clearly different with six different growth stages. The root length was not clearly different between two temperatures; however it was continuously grown from June until August. The root diameter was higher at low temperature than that at high temperature. It was rapidly increased from June until August. The length, width, and area of leaf were higher at low temperature than those at high temperature. The fresh and dry weights of different plant tissues were also heavier at low temperature than those at high temperature. The moisture content of ginseng root was continuously decreased from June until August. The yield of ginseng was higher at low temperature compared to that at high temperature. The cultivating conditions in hydroponic culture of ginseng, especially temperature, would be an important factor to have better growth and production.

Effect of Photoperiod, Temperature and True-leaf Stage in Bolting Rate of Chicory (Cichorium intybus L. var. sativus)

  • Lim, Jung-Dae;Seo, Jeong-Sik;Lee, Hyeon-Yong;Kim, Jong-Dai;Lee, Jin-Ha;Yu, Chang-Yeon
    • Plant Resources
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    • v.7 no.1
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    • pp.29-35
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    • 2004
  • Root chicory (Cichorium intybus L. var. sativus) is potential alternative medicinal and sugar crop which accumulates a high amount of linear polyfructan, inulin in its roots. A problem in root production is that over-wintered stock plants often flower. Once the plant becomes reproductive, stem elongation and root growth slows and floral buds arise from every node, rendering the plants useless for propagation. The objectives of this research was to examine the effectiveness of manipulating environmental factors containing photoperiod, temperature and number of leaf states. The experiment was performed in growth chamber to create two photoperiods (8 h, and 16 h) with three temperature regimes (5$^{\circ}C$/3$^{\circ}C$, 1$0^{\circ}C$/8$^{\circ}C$ and 15$^{\circ}C$/13$^{\circ}C$ day/night temperature) for a total of six treatments on three type of true-leaf stage of plant. Data of bolting rate, shoot and root length, shoot and fresh weight was invetigated in each treatments. This is the first report on changes in bolting rate and shoots and roots production during a whole growing season and differences in the effect of cold and photoperiod treatment depending on the true-leaf stage of plant.

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Pyrolysis of Waste Oriental Medicine Byproduct Obtained from the Decoction Process of Achyranthes Root (우슬(Achyranthes Root) 탕제 후 얻어진 폐한약재 부산물의 열분해)

  • Park, Ji Hui;Jeong, JaeHun;Lee, Ji Young;Kim, Young-Min;Park, Young-Kwon
    • Applied Chemistry for Engineering
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    • v.29 no.4
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    • pp.474-478
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    • 2018
  • Thermal decomposition of waste Achyranthes Root (WAR) emitted from its decoction process was investigated using a TG analyzer and a fixed-bed reactor. The WAR had the larger C and fixed carbon content than fresh AR (FAR) due to the extraction of hemicelluloses from FAR during decoction process. Thermogravimetric (TG) analysis results also revealed the elimination of hemicellulose by its decoction. Relatively high contents of the cellulose and lignin made high contents of their typical pyrolyzates, such as acids, ketones, furans, and phenols, in the pyrolysis of WAR using the fixed-bed reactor. The increase of pyrolysis temperature from 400 to $500^{\circ}C$ increased yields of oil and gas due to the more effective cracking efficiency of WAR at a higher temperature. The chemical composition of product oil was also changed by applying the higher pyrolysis temperature, which increased the selectivity to furans and phenols.

Natural Dyeing of Cotton Fabrics with Rumex crispus L. Root (소루쟁이뿌리를 이용한 면직물 천연염색)

  • Han, Mi-Ran;Lee, Jeong-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.2
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    • pp.222-229
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    • 2009
  • The natural dyeing of cotton fabrics with Rumex crispus L. root extract was investigated. The dyeability of Rumex crispus L. root extract was evaluated with conditions of concentration, temperature, time, repeat-numbers, pH, mordants variables, methods of mordanting, color fastness and antibacterial activity, etc. The maximum V-visible spectrum possessed absorption band of Rumex crispus L. extract appeared at 274nm and 336nm. The amount of dyes extracted was increased with extracting concentration, temperature and time. The K/S value increased with increasing dyeing concentration and repeat-numbers. The K/S value increased with increasing dyeing temperature and time, the exhaustion was saturated in $90^{\circ}C\;and\;80min$, respectively. Surface colors of fabrics dyed with pH 3, 7, 11 extract were RP-R-YR-Y range. The light fastness and washing fastness showed good results in Fe-mordanted. The dry leaning fastness appeared more than 4 grade. Rubbing fastness was better in dry methods han that in wet methods. In the result of antibacterial activity, the decrease rate was 9.9% to Staphylococcus aureus with the dyed fabric of cotton.

Soil-Environmental Factors Involved in the Development of Root Rot/Vine on Cucurbits Caused by Monosporascus cannonballus

  • Kwon, Mi-Kyung;Hong, Jeong-Rae;Kim, Yong-Hwan;Kim, Ki-Chung
    • The Plant Pathology Journal
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    • v.17 no.1
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    • pp.45-51
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    • 2001
  • A root rot/vine decline disease occurred naturally on bottle gourd-stocked watermelon, melon, oriental melon and squash grown in greenhouses, but not on these plants grown in fields. Self-rooted watermelon, cucumber, pumpkin and luffa were also proven to be hosts of the pathogen by artificial inoculation in this experiment. The pathogen was identified as Monosporascus cannonballus by comparing microscopic characteristics of fungal structures with those of previously identified fungal strains. Our field investigations showed that the temperature and electric conductivity of soil in infected greenhouses were higher and the soil moisture content was lower than in noninfected greenhouses. To investigate soil-environmental factors affecting disease development, greenhouse trials and inoculation experiments were conducted. The host plants inoculated and grown under conditions of high soil temperature and electrical conductivity ($35\pm2^{\circ}$, 3.2-3.5 mS) and with low soil moisture content (pF 3.0-4.5) were most severely damaged by the fungal disease. Since plants growing in greenhouses ae usually exposed to such environmental conditions, this may be the reason why the monosporascus root rot/vine decline disease has occurred only on cucurbits cultivated in greenhouses but not in field conditions.

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Development of Predictive Growth Model of Listeria monocytogenes Using Mathematical Quantitative Assessment Model (수학적 정량평가모델을 이용한 Listeria monocytogenes의 성장 예측모델의 개발)

  • Moon, Sung-Yang;Woo, Gun-Jo;Shin, Il-Shik
    • Korean Journal of Food Science and Technology
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    • v.37 no.2
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    • pp.194-198
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    • 2005
  • Growth curves of Listeria monocytogenes in modified surimi-based imitation crab (MIC) broth were obtained by measuring cell concentration in MIC broth at different culture conditions [initial cell numbers, $1.0{\times}10^{2},\;1.0{\times}10^{3}\;and\;1.0{\times}10^{4}$, colony forming unit (CFU)/mL; temperature, 15, 20, 25, 37, and $40^{\circ}C$] and applied to Gompertz model to determine microbial growth indicators, maximum specific growth rate constant (k), lag time (LT), and generation time (GT). Maximum specific growth rate of L. monocytogenes increased rapidly with increasing temperature and reached maximum at $37^{\circ}C$, whereas LT and GT decreased with increasing temperature and reached minimum at $37^{\circ}C$. Initial cell number had no effect on k, LT, and GT (p > 0.05). Polynomial and square root models were developed to express combined effects of temperature and initial cell number using Gauss-Newton Algorism. Relative coefficients of experimental k and predicted k of polynomial and square root models were 0.92 and 0.95, respectively, based on response surface model. Results indicate L. monocytogenes growth was mainly affected by temperature and square root model was more effective than polynomial model for growth prediction.