• Title/Summary/Keyword: Dry heat treatment

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The Study on Relationship Between Thermal Stress Properties and Thermal Shrinkage of PET Filament Yarns (PET 필라멘트사의 열응력특성과 열수축율과의 상관성연구)

  • 김영진;김승진;김태훈;김경렬;박인동
    • Textile Coloration and Finishing
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    • v.10 no.2
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    • pp.45-54
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    • 1998
  • This study surveys relation between thermal shrinkage and thermal stress properties after process simulation of heat treatment with various PET filament yarns. For this purpose, 12 kinds of regular yarns and POY, 6 kinds of DTY and 5 kinds of composite yarns were experimented for investigating step thermal shrinkage, total thermal shrinkage and total thermal stress and maximum thermal stress temperature. Thermal stress and shrinkage of the various specimens treated with wet and dry heats were analysed and discussed with the conditions of heat treatment. finally, relationship between thermal stress and shrinkage of the various PET filaments such as regular yarns, POY, DTY and composite yarns were investigated with the PET filament characteristics.

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Changes of antioxidative properties according to the heat-treatment of ginger extracts (생강추출물의 열처리에 따른 항산화성 변화)

  • 이진영;안명수
    • Korean journal of food and cookery science
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    • v.10 no.1
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    • pp.63-70
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    • 1994
  • Oleoresin, 6-gingerol and 6,10-gingerol: 6-paradol= 1 : 1 mixture were extracted from ginger (Zingi-her of ficinale Roscoe) and changes of its antioxidant activity by heat-treatment were studed. Oleoresin was extracted with Ethanol-Ether and 6,10-gingerol : 6-paradol(1 : 1) and 6-gingerol were extracted with Hexane and Hexan : Ether= 1 : 1, respectively, and identified on the Thin-layer Chromatograpy (TLC) plate with the solvent system of Hexane Ether(1 : 4, v/v). And oleoresin was heat-treated during 0, 10, 30, 60, 120 minutes, and 6-gingercl and 6,10-gingerol . 6-paradol=1 : 1 were heat-treated during 0, 5, 10, 20, 40 minutes, respectively, at 140$^{\circ}C$ dry oven. To compare with antioxidant activity, oleoresins were added into soybean oil at 3fo level, 6-gingerol and 6,10-gingerol : 6-paradol= 1 : 1 at 0.1% level, BHT and TBHQ at 0.02% level, respectively. All the substrates treated were stored in a incubator at 45 2$^{\circ}C$ condition. The oxidative stability was estimated by the analysises of peroxide value and conjugated diene value during storage. The results were as follows: Antioxidant activity of oleoresins were considerably high and by heat-treatment were not decreased. 6-paradol was not show the antioxidant activity. 6,10-gingerol : 6-paradol=1 : 1 provided poor protection for soybean oil. Antioxidant activity of 6-gingerol was higher than 6,10-gingerol : 6-paradol=1 : 1 and by heat-treat-ment antioxidant activity was directly decreased. Relative antioxidant effectiveness(RAE) of each antio-xidant was compared. RhR was found to decrease as follow : TBHQ>oleoresin》BHT TBHQ》BHT>6-gingerol》6,10-gingerol : 6-paradol=1 : 1.

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Physical Dormancy in Seeds of Chinese Milk Vetch (Astragalus sinicus L.) from Korea

  • Kim, Sang-Yeol;Oh, Seong-Hwan;Hwang, Woon-Ha;Kim, Sang-Min;Choi, Kyung-Jin;Kang, Hang-Won
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.53 no.4
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    • pp.421-426
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    • 2008
  • Freshly harvested seed of Chinese milk vetch (Astragalus sinicus L.; CMV) was strongly dormant because of hardseedness. Seeds of freshly harvested germinated only 8% while clipping the seed coat completely overcome the innate dormancy, which indicates inhibition of germination of the seed is mainly due to seed coat (87%). The dormant (intact) hard seeds did not imbibe water whereas the non-dormant (clipped) seeds took up rapidly. In natural environment condition, the hard seed coat dormancy was broken only after 5 months after seed harvest. To break such a strong seed coat dormancy, the chemical and heat treatments were effective. Concentrated sulfuric acid was more effective than dry heat and hot water treatments. Hot water treatment improved germination but the germination percentage was less than 41%. Treatments increased germination due to its effect on the seed coat integrity. A scanning electron microscope reveled that disruption of seed coat layers and subsequent development of numerous crack in the hilum region of the seed and on the seed coat surface of concentrated sulfuric acid treatment and formation of cracks in the dry heat treatments, respectively, were observed in the seed coat surface, which served as water entry points.

Effects of heat setting temperature conditions on the mechanical properties of Polybutylene succinate (PBS) monofilament yarn after net-making (편망 후 열처리 온도가 PBS 모노필라멘트사의 물리적 특성에 미치는 영향)

  • Park, Seong-Wook;Kim, Seong-Hun
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.48 no.1
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    • pp.20-28
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    • 2012
  • The monofilament with 0.304mm of diameter was produced using a polybutylene succinate (PBS) resin, and a gill net was made by it. We investigated the impact of heat setting temperature on the mechanical properties, knot state and height of gill net. Heat treatment was carried out using the high pressure steam machine for 20 minutes at temperature of $55^{\circ}C$, $60^{\circ}C$, $70^{\circ}C$ and $75^{\circ}C$. Before heat treatment, the strength and elongation of PBS monofilament were estimated to be $48.1kg/mm^2$, 23.8% at unknot, $37.6kg/mm^2$, 18.8% at single knot, $26.6kg/mm^2$, 22.9% at double knot in dry condition, respectively. The strength and elongation of PBS monofilament with double knot were decreased as heat setting temperature increased, and the decreasing rate of strength was showed to be higher than that of elongation. It was not found any differences in strength and elongation of PBS monofilament yarn with double knot at the $65^{\circ}C$ and $70^{\circ}C$ of heat setting temperature by 5% significance of T-test, but there was a significant difference at the $70^{\circ}C$ and $75^{\circ}C$ of heat setting temperature. The net's height and length from leg to leg appeared no differences at the $70^{\circ}C$ and $75^{\circ}C$ of heat setting temperature. In results, it was investigated that the PBS monofilament gill net with the maximized physical properties could be manufactured at $70^{\circ}C$ of heat setting temperature using a high pressure steam machine for 20 minutes.

A Case Report of Migraine with Typical Aura on Korean Medical Treatments

  • Cho, Myoung-Ui;Lim, Su-Yeon;Jeon, Hyun-A;Lee, Ji-Yeon;Moon, Young-Joo;Song, Kwang-Chan;Koh, Young-Tak
    • Journal of Oriental Neuropsychiatry
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    • v.29 no.4
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    • pp.315-324
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    • 2018
  • Objectives: The objective of this case report was to investigate the effect of Korean medicine therapy on migraine patients with typical aura. Methods: Acupuncture and chuna manual therapy were applied to outpatients once in 1 to 2 weeks, a total of 9 times, for about 11 weeks. A patient was diagnosed with ganyang-toutong and taeeumin dry-heat symptomatic pattern. Herbal medicine (Chongsanggeontong-tang Gagambang (淸上?痛湯加減方)) was prescribed for 15 days up to the 3rd visit, then another herbal medicine (Yeoldahanso-tang (熱多寒少湯)) prescribed for 15 days up to the 6th visit. MSQol and MIDAS were used as a tool at the start and after 9th treatment. The intensity and frequency of headache, frequency of aura and neck pain were examined on every visit. Results: According to the results, Korean traditional medicine described above had effect on the intensity and frequency of headache, frequency of aura and neck pain as well as an increase in the figure of MSQoL from 62 to 81 and decrease of MIDAS Disability from 18 to 7, Duration from 60 to 30, Pain score from 8 to 2. Conclusions: Migraine with typical aura classified as ganyang-toutong and taeeumin dry-heat symptomatic pattern can be alleviated by Korean traditional medicine.

Changes of Lactulose Content during Heat Treatment of Milk (우유의 열처리 및 저장 조건에 따른 Lactulose의 함량 변화)

  • 김철현;백승천;정운현
    • Food Science of Animal Resources
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    • v.22 no.1
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    • pp.50-54
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    • 2002
  • The aim of this work to determine the formation of lactulose during heat treatment process as a contribution to the estabilishment of limits of chemical indicators for different types of heat processed milk and analyze of lactulose for the reconstituted milk added samples. The HTST(75$\^{C}$/15s) and UHT(130$\^{C}$/2∼3s) treatment realized with a pilot plant and heat-treated samples were stroed at 4, 10, 30$\^{C}$ for 4 weeks. Changes in lactulose was evaluated at 7 days intervals. The other heat treatment was sealed in glass tube and heated at 75$\^{C}$ for 10 to 120s and heated at 130$\^{C}$ for 2 to 60s in a thermostatically controlled constant temperature bath of glycerol. The reconstituted milk was made with full fat dry milk that reconstituted with deionized water to 10% total solid, and was added to milk at 10, 20, 30% respectively. The samples processed with a HTST pilot plant showed that lactulose was contained at 1.47∼1.52mg/10()ml and 8.19 ∼8.32mg/100ml for UHT-treated samples. Changes in the lactulose content of heat-treated samples during storage at 4 and 10$\^{C}$ for 4 weeks caused a slight increase, however a noticeable increase was observed at 30$\^{C}$ for 4 week. The glass tube samples showed that high correlations between relative increase in content of lactulose and increasing processing times(75$\^{C}$ : r = 0.986, 130$\^{C}$ : r = 0.987, respectively). Added with reconstituted milk would cause a increase of the lactulose content linear with increasing addition amount(r = 0.982). This results observed for lactulose in commercial milk samples would applied to the detection of chemical changes during heat treatment and illegal use of reconstituted milk.

A Literatual Study on the Treatment of Stroke in The 《Dongyi Suse Bowon》 (동의수세보원(東醫壽世保元)의 문헌적(文獻的) 자료(資料)에 근거(根據)한 중풍(中風) 치료(治療)에 대한 고찰(考察))

  • Lee, Hwa-sub;Ahn, Taek-won
    • Journal of Haehwa Medicine
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    • v.11 no.1
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    • pp.285-294
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    • 2002
  • The purpose of this study was to find the way of treatment and prevention the stroke by Sasang constitutional medical therapy. I came to get some conclusions after considering literatures of ${\ll}$Dongyi Suse Bowon${\gg}$ and the conclusion as follows. 1. In ${\ll}$Dongyi Suse Bowon${\gg}$ the stroke of Soumin is caused by 'Interior cold disease'. When 'Interior Yin' can not descend, the disease arise. In this case Lee Je-ma used 'Sohabhyang-won(蘇合香元)', 'Chulaek-su(鐵液水)'. 2. The stroke of Soyangin is caused by 'Interior heat disease'. When the hot Qi of stomach and spleen is blocked, the disease arise. In this case Lee Je-ma used 'Dokhwal-jihwang-tang(獨活地黃湯)', 'Jihwang-baekho-tang(地黃白虎湯)'. 3. The stroke of Taeumin is caused by 'Dry and heat disease'. When the heat of liver and the dryness of lung is excessive, the disease arise. In this case Lee Je-ma treated with 'Woohwang-chungsim-hwan(牛黃淸心丸)', 'Wonji-sukchangpo-tang(遠志石菖蒲湯)', and 'Kwache-san(瓜帶散)' etc. Above results indicate that not only taking medicine but also filling up the Healthy energy(保命之主) is important to treat stroke.

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STUDY ON PROCESSING AND UTILIZATION OF CULTURED UNDARIA PINNETIFIDA 1. Effect of Heat Treatment on the Storage Life of Dry Salted Undaria pinnatifida (양식미역의 이용가공에 관한 연구 1. 열처리방법에 따른 염장미역의 보장효과)

  • KANG Sung-Koo;KIM Woo-Jun;KANG Tae-Jung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.9 no.1
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    • pp.19-24
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    • 1976
  • To examine the storage effect of the dry cured cultured undaria pinnetifida, its components were researched according to different places and periods of production and in heat treatment of it, how the different time, temperature and salt concentration can effect on its storage was researched as follows. In Pohang and Yeosu districts the most suitable period of processing was around the end of December and in Wando district, around the end of January. When it was heat-treated separately at $90^{\circ}C\;and\;100^{\circ}C$ there of occurred the comparative low increase of organic acids and volatile acids, and the slight decrease of pigment. When it was heat-treated in sea water and satuarated NaCl solution, the obvious change was not found in all components, and in fresh water organic acids and volatile acids were conspicuously increased. When it was heat-treated according to the different heating time (long or short), there was no remarkable change in all components, but when heat-treated for 20 sec. the decrease of carotenoid was conspicuous. When heat-treated for 40 sec. separately at $90^{\circ}C\;and\;100^{\circ}C$ in sea water, better effect for storage was resulted.

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Analyses of Essential Oil Components and Contents in Artemisia sp According to Heat Treatments (가열처리 방법에 따른 쑥의 정유 성분 및 함량 분석)

  • Kim, Choong-Ho
    • Culinary science and hospitality research
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    • v.17 no.4
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    • pp.273-284
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    • 2011
  • The essential oil obtained by steam distillation from a medicinal plant of Artemisia princeps. The essential oil was analyzed by GC-MS. The heat treatments in roasted condition of temperatures were $80^{\circ}C$, $110^{\circ}C$, and $230^{\circ}C$, and the lengths of the time were 6 min, 10 min, and 14 min, respectively. The blanching conditions($100^{\circ}C$) of the treatments lasted 1 min, 2 min, and 5 min while the times of oven dry ($50^{\circ}C$) was 5 min. As the result, the essential oil content of the control plot was higher than the others, and that of the roasted ones was the second highest in low temperature with short treatment time. The major components were eucalyptol, cyclohexadience, phenol, terpineol, and caryopbyllene.

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Analysis of Pattern Identification and Related Symptoms, Treatment Principles and Korean Medicine Treatments on Childhood Simple Obesity -Focused on Traditional Chinese Medicine Literature- (소아 단순 비만의 변증 유형, 변증별 증상, 치법 및 한의치료 분석 - 중의학 논문을 중심으로 - )

  • Jeong, Yoon Kyoung;Kim, Jae Hyun;Bang, Mi Ran;Lee, Boram;Chang, Gyu Tae
    • The Journal of Pediatrics of Korean Medicine
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    • v.37 no.1
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    • pp.15-44
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    • 2023
  • Objectives The purpose of this study is to analyze the types of childhood simple obesity and suggest clinical symptoms, treatment principles, and traditional Chinese medicine (TCM) treatments for each type. Methods All kinds of literature published by the China National Knowledge Infrastructure (CNKI) up to August 20, 2022 were analyzed. We extracted information about types of childhood simple obesity, relevant clinical symptoms, treatment principles and TCM treatments. Results 25 studies were included. Spleen deficiency with dampness obstruction, gastrointestinal dampness-heat, internal excess of phlegm-dampness were the most reported. Spleen deficiency with dampness obstruction has symptoms of powerless, heavy limbs, pale tongue, teeth-marked tongue, sunken and slippery pulse. As a treatment, herbal medicine (HM) like modified Banggihwanggitang and acupoint like Joksamri were mainly reported. Gastrointestinal dampness-heat has symptoms of thirst, constipation, edacity, rapid hungering, heavy limbs, red tongue, slippery and rapid pulse. HM like Modified Xiehuangsan to clear heat was mainly reported. Internal excess of phlegm-dampness has symptoms of heavy limbs, lack of strength, tongue with white slimy fur, slippery pulse. Modified Ijintang to dry dampness to resolve phlegm was mainly reported. Conclusions This study analyzed types of pattern, clinical symptoms, treatment principles, and TCM treatments of childhood simple obesity. Based on this study, it is necessary to derive a standardized dialectical information that reflects the domestic situation.