• Journal of the Korean GEO-environmental Society
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• v.17 no.2
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• pp.23-29
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• 2016

This study was carried out with a view to increasing the tensile strength of sand soil and examined the characteristics of the tensile strength of sand soil reinforced by hair fiber which is environmentally friendly. The study investigated the change of the tensile strength and the stress-strain relationship varying the length of hair fiber, the amount of hair fiber, the amount of cement, and curing days. The test results indicated that the tensile strength increased significantly with hair fiber mixed. In addition, the sand soil mixed with hair fiber had larger displacement at failure. Based on the test results, it is appeared that the environmentally friendly hair fiber could be utilized practically to increase the tensile strength of sand soil in the future.

• Journal of the Korean Geotechnical Society
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• v.31 no.6
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• pp.15-25
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• 2015

This study aimed at the strength increase of the soft ground and analyzed the strength characteristics of clay soil reinforced with hair fiber which is environmentally friendly. The study varied the length of hair fiber, the amount of hair fiber, the amount of cement, and curing days to investigate both the compressive and tensile strengths and the stress-strain relationship of hair fiber mixed clay soils. The test results indicated that both the compressvie and tensile strengths increased with hair fiber mixed, especially in the tensile strength. In addition, the hair fiber mixed clay soil allowed larger displacement to failure. Based on the test results, it is thought that the environmentally friendly hair fiber could be utilized practically to increase the clay strength in the future.

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.223-226
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• 2002

일반적으로 바레(barre)라고 하는 이색현상(shade variation)에 대해 ASTM에서는 직물의 위사 또는 환편물의 환편코스에 평행하고 연속적인 띠와 줄이 비고의적이고 반복적으로 나타나는 형태라고 정의하고 있으며, 원사의 물리적, 광학적 및 염색성 차이 또는 원단조직의 기하학적 차이와 이들의 복합적인 원인에 의해서도 발생할 수 있다고 하였다[1]. 또한, 면제품의 이색은 면섬유의 마이크로네어[2], 색상[3], 면사의 선밀도, 꼬임수, 헤어리니스 그리고 편성장력 등의 변동에 영향을 받으며, 산지, 수확시기 및 물성이 다른 원면의 부적절한 혼면 등에 의해서도 발생되는 것으로 알려져 있다[4]. (중략)

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.12 s.159
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• pp.1708-1713
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• 2006

The purpose of this study is to investigate the efficacy of juglone, which shows hish affinity to wool, for hair dyeing as a natural dye. Before dyeing hair with juglone, virgin hair was bleached by a conventional method using hair shops in the city. In order to study the dyeing properties of juglone on hair, the effects of dyeing conditions on dye uptake, color, tensile strength, and morphology were investigated. And the effect of Fe-mordanting on color change was also investigated. Dye uptake changed marginally as dye concentration increased in the range of 0.02-0.04g. Dye uptake increased progressively is dyeing time increased in the range of 10-20 min. Juglone produced YR colors on hair and the color of dyed hair got duller as juglone concentration increased. The hair was little damaged by bleaching, but cuticles were melted and stripped away by dyeing for longer time. Tensile strength retention decreased up to 65% at 20 min dyeing. Simultaneous mordanting with Fe did not improved dye uptake, but led to darker brown color compared with unmordanted hair.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.30 no.4 s.48
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• pp.457-462
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• 2004

Anti-wrinkle effect of N-Acetyl-D-glucosamine (NAG) was evaluated by collagen synthesis and proliferation of normal human fibroblast. NAG was obtained by purifying deacetylated chitin which can be derived from chitin-rich crab shell. We studied in in-vitro cultures of human normal fibroblast, whether synthesis of collagens and fibroblast growth activation in these cells can be enhanced in the presence of NAG. It 야d not show any adverse effects in human shin irritation patch test. In in-vivo mouse test, it showed anti-wrinkle effect in hairless mouse (6W/F). From the HPLC analysis, the stability of NAG in the cosmetics product could be maintained for a long time. These results demonstrated that NAS can be useful anti-wrinkle cosmetic ingredient.

• Journal of The Korean Society of Grassland and Forage Science
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• v.26 no.4
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• pp.207-214
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• 2006

The object of this experiment was to suggest the optimum utilization upon rye and hairy vetch crops in Daejeon area. The field trials were conducted from 2002 to 2004 at Chungnam National University in order to evaluate the dry matter yield and quality of rye, hairy vetch, and rye+hairy vetch mixtures. The experiment was designed with split plots (main plot : seeding rate as rye mono culture, hairy vetch monoculture, rye 80%+hairy vetch 20%, rye 60%+hairy vetch 40%, and sub plot : 4 cutting stages as boot, heading, anthesis, milk). The average DM yield for 2 years had a difference on seeding rate and harvesting stages. The DM yield of rye monoculture was higher than those of the other seeding rates. There were significant increases in advanced stages in all treatments. In chemical composition, they also had a difference on seeding rates and growth stages. Hairy vetch monoculture was higher in crude protein (CP) and dry matter digestibility (DMD), but lower in fibrous compound than those of the other seeding rates (p<0.01). The crude protein dry matter (CPDM) and digestible dry matter yield was higher in rye 80%+hairy vetch 20% mixture when it was harvested at anthesis to milk stages. The results of this experiment indicated that when it was harvested at anthesis to the milk stages, rye 80%+hairy vetch 20% mixture was more effective in enhancing the DM yield and forage quality in Daejeon area.

• Journal of The Korean Society of Grassland and Forage Science
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• v.34 no.1
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• pp.9-14
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• 2014

This experiment was carried out to order to determine the forage production and soil characteristics in mixtures of Italian ryegrass (IRG) and annual legumes at the riverbed. The IRG and hairy vetch mixture had the highest in fresh, dry matter (DM) as well as total digestible nutrients (TDN) yields among the forage mixtures. Further IRG and hairy vetch mixture had the highest in DM content. The crude protein (CP) content of IRG and hairy vetch mixture was the highest, Whereas non-fiber carbohydrate (NFC) and TDN contents were lower compared to other mixtures. The total nitrogen (TN) of IRG and hairy vetch mixture was the highest due to high nitrogen fixation in the riverbed soil. The IRG and rape mixture was the highest in organic matter (OM) of soil. Moreover, the available $P_2O_5$ of soil in IRG and crimson clover mixtures was higher compared to other mixtures. Further, the IRG and hairy vetch mixture was the highest in cation exchange capacity (CEC) content. Therefore IRG and hairy vetch mixture is more suitable in forage mixtures due to high forage production and protein as well as high soil CEC content at the riverbed.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.11
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• pp.1684-1690
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• 2010

The properties of non-waxy rice, Dongjin 1, cultivated with conventional farming (CF) and environmentally-harmonized farming (EHF) using hairy vetch were compared to determine rice water absorption, physicochemical and pasting properties, antioxidant activities of brown and white rice, and a sensory evaluation of cooked white rice was carried out. EHF was treated with green manure crops such as hairy vetch and chitinase, which produce microorganism culture solution. CF was applied with seed disinfection treatments, fertilizer herbicides, and agricultural chemicals for the control of pests and diseases. The absorption level of EHF rice was higher than that of CF rice grain, regardless of the cultivation methods used. The ash and crude lipid contents were higher, but protein and dietary fiber contents were lower in the CF rice than in the EHF rice. The total starch content, water binding capacity, and swelling power of white rice were higher than those of brown rice, regardless of the cultivation methods used. The DPPH's antioxidant activity was shown as follows: EHF brown rice, EHF white rice and CF rice, in a decreasing order. The initial pasting temperature of EHF rice was lower than that of CF rice, but the peak, cold, and breakdown viscosities exhibited reverse trends. The sensory evaluation showed that the cooked white rice cultivated with EHF was not significantly different from that cultivated with CF (p<0.05). The overall preference of cooked rice did not show significant differences between the two cultivation methods (p<0.05).

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.4
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• pp.519-525
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• 2012

Effects of cultivated conditions on antioxidant compounds and antioxidant activities of sweet potatoes (Ipomoea batatas (L.) Lam) were determined. The cultivated variety was Shinyulmi, and they were cultivated in a conventional culture, successful cropped hairy vetch culture, successful cropped barley cultivation, successful cropped rye cultivation, successful cropped mix-seeding of hairy vetch and barley, successful cropped mix-seeding of hairy vetch and rye, and not fertilizer. The brix degree, moisture, protein, and ash content of the sweet potatoes did not significantly change with the cultivated conditions. However amylose, total dietary fiber, and mineral content had significant changes. The total polyphenol, flavonoid, and tannin content of the methanolic extracts of the sweet potato's pericarp showed significant differences from cultivated conditions, however, the sweet potato's sarcocarp did not significantly change. The highest DPPH and ABTS radical scavenging activities of the methanolic extracts of the sweet potatoes were 958.81 and 663.53 mg TE/100 g in the sweet potato's pericarp on the successful cropped hairy vetch culture. Generally, there was a difference in antioxidant compound content and radical scavenging activity on the methanolic extract of sweet potato with cultivated conditions.

• Journal of The Korean Society of Grassland and Forage Science
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• v.34 no.1
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• pp.39-44
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• 2014

This study was conducted to investigate the effect of the addition of lactic acid bacteria (LAB) and chlorella on the change of nutritive value, quality and microbes regarding the mixture silage of Italian ryegrass and hairy vetch (IRG-HV silage). The content of crude protein of IRG-HV silage in only the LAB treatment was not different as compared to the control. However, the content of crude protein significantly increased in the treatment of LAB with chlorella, compared to both the control and LAB treatments (p<0.05). Acid detergent fiber, neutral detergent fiber, total digestible nutrient and in vitro dry matter digestibility of IRG-Alfalfa silage were not significantly different in all treatments. Further, the pH of IRG-HV silage in only the LAB treatment was not different as compared to control, but decreased in both LAB and chlorella treatments (p<0.05). The content of lactic acid in the LAB treatment increased as compared to the control, and also significantly increased in the LAB treatment with chlorella (p<0.05). In addition, the number of LAB in LAB treatment increased as compared to the control, and significantly also increased in the LAB treatment with chlorella (p<0.05). Therefore, we suggest that IRG-HV silage improved with addition of both LAB and chlorella.