• Journal of Animal Science and Technology
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• 제64권1호
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• pp.52-69
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• 2022

Ferulic acid (FA) is a phytochemical with various bioactive properties. It has recently been proposed that due to its phytogenic action it can be used as an alternative growth promoter additive to synthetic compounds. The objective of the present study was to evaluate the growth performance, carcass traits, fiber characterization and skeletal muscle gene expression on hair-lambs supplemented with two doses of FA. Thirty-two male lambs (n = 8 per treatment) were individually housed during a 32 d feeding trial to evaluate the effect of FA (300 and 600 mg d^-1) or zilpaterol hydrochloride (ZH; 6 mg d^-1) on growth performance, and then slaughtered to evaluate the effects on carcass traits, and muscle fibers morphometry from Longissimus thoracis (LT) and mRNA abundance of β₂-adrenergic receptor (β₂-AR), MHC-I, MHC-IIX and IGF-I genes. FA increased final weight and average daily gain with respect to non-supplemented animals (p < 0.05). The ZH supplementation increased LT muscle area, with respect to FA doses and control (p < 0.05). Cross-sectional area (CSA) of oxidative fibers was larger with FA doses and ZH (p < 0.05). Feeding ZH increased mRNA abundance for β₂-AR compared to FA and control (p < 0.05), and expression of MHC-I was affected by FA doses and ZH (p < 0.05). Overall, FA supplementation of male hair lambs enhanced productive variables due to skeletal muscle hypertrophy caused by MHC-I up-regulation. Results suggest that FA has the potential like a growth promoter in lambs.

• Bulletin of the Korean Chemical Society
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• 제25권8호
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• pp.1137-1142
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• 2004

A spectrophotometric and first derivative spectrophotometric method was developed in aquatic Tween 80 micellar solutions for selective determination of nickel without using any pre-separation step. 1-(2-Pyridylazo)-2-naphthol (PAN), as a sensitive chromogenic complexing agent formed a red-colored Ni(II)-PAN complex in Tween 80 media with satisfactory solubility and stability. Conditions such as pH, PAN concentration, type and concentration of micellizing agent were optimized. Molar absorptivity of Ni-PAN complex was found $4.62\;{\times}\;10^4L\;cm^{?1}\;mol^{?1}$ at 569 nm, under the optimum condition. Calibration graphs were derived by zero, first and second derivative spectrophotometry at maximum wavelengths of 569, 578 and 571 nm with linear ranges of 30-1800, 20-2500 and 30-2000 ng $mL^{?1}$ , respectively. Precision as standard deviation as well as accuracy as recovery percent were in the range of 1-20 ng $mL^{?1}$, and 93.3-103.3%, respectively, for the entire of the linear ranges. Spectrophotometric detection limit was 3 ng $mL^{?1}$ and effects of diverse ions on the first derivative determination of nickel were studied to investigate selectivity of the method. Interferences of cobalt and copper on the nickel determination were prevented using o-phenanthroline as masking agent. The recommended procedures were applied to the various synthetic and stainless steel alloys, tea leaves and human hair, with satisfactory results.

• 한국환경교육학회지:환경교육
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• 제9권1호
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• pp.58-71
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• 1996

The purpose of this study was to investigate the rural housewives' recognition and practice on environmental preservation. The subjects of this study were 300 rural housewives living in Chung-buk province. Questionaires were distributed to them during a week from August $25^{th}$ to August $31^{th}$ in 1995. Major findings were as follows: 1. The saved water quite well in washing their faces and the dishes compared with urban housewives, but they did not save water so well in using the lavatory. They used synthetic detergent, one of water pollutants, more often than natural soaps in shampooing and laundering. In addition, they did not use a measuring cup. It resulted in the waste of detergent and aggravation of water pollution. 2. Food waste was disposed of properly, but used batteries were not collected separately. A disposable vinyl bag was more commonly used than a reusable shopping basket. The reason for not using a shopping basket was bothering or uncustomary. Since most of them did not know refillable products of goods with environmental mark, they did not use those. Therefore, housewives should be educated in order to prevent soil pollution. 3. The use of spry-type pesticide and hair treatment, one of air pollutants, was wide-spread among them. They hardly recognized and practiced saving of electric power when they used household electric appliances. 4. The major source of environmental knowledge was mass media like TV of radio. Many of them did not know the practical ways to solve the environmental education program. In conclusion, low level of recognition and practice of rural housewives on environmental preservation indicated that a systematic environmental education program should be developed and implemented.

• 한국응용곤충학회지
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• 제39권2호
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• pp.105-110
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• 2000

사과, 복숭아와 밤 열매 등을 가해하는 주요해충 중의 하나인 복수아명나방(Dichocrcis punctiferalis)을 성페로몬을 이용하여 발생예찰하기 위해 성페로몬 성분분석과 행동관찰, 성페로몬 조성별 야외포획실험을 수행하였다. 처녀암컷의 교미행동은 16L:8D의 광주기 $26\pm$1$^{\circ}C$ 온도조건에서 소등 후 4시간째에, 수컷의 가는털뭉치 돌출행동은 5시간째에 최고를 나타내었다. 이시간대의 암컷 복부 끝 헥산추출물에서는 E10-hexadecenal과 Z10-hexadecenal이 가스크로마토그래피 분석에 의해 85:15의 비율로 검출되었다. 야외에서 수컷 성충을 유인하기 위해 두 성분의 합성화합물을 이용하여 사과 및 복수아와 밤 과수원에서 포획실험이 수행되었는데 E10-hexadecenal과 Z10-hexadecenal이 70:30~80:20의 비율에서 가장 많이 포획되었고, 이와 유사한 조성에서 수컷의 가는털뭉치 돌출반응과 상승비행반응이 관찰되었다.

• 대한본초학회지
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• 제32권3호
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• pp.37-44
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• 2017

Objectives : The application of DNCB (1-chloro-2,4-dinitrochlorobenzene) can cause cellular immunity allergic reaction such as erythema or edema on NC/Nga mice and combinational function of cells participating in immunity increase inflammatory mediator. In this study, the effects of cypress essential oil on NC/Nga mice have been assessed. Methods : Male SPF NC/Nga mice aged 8 weeks have been used for atopic dermatitis induction skin. 1% DNCB was applied on ears and backs of which hair was removed using clipper on $1^{st}$ day and 0.4% DNCB was applied three times a week for 3 weeks. In this study, cypress essential oil has been treated 1 time a day for 3 weeks after application of DNCB to induce atopic dermatitis on skin for further experiments. Results : This study shows that inhalation or application of cypress essential oil reduced edema in ears and the thickness of epidermis induced by DNCB treatment. And it can be known that treatment of cypress essential oil inhibited mast cell proliferation and reduced IgE level similar to that of the negative control especially when cypress essential oil was inhaled by the mice. Synthetic oil showed the effects lower than those of cypress essential oil. Conclusions : Inhalation or direct application of cypress essential oil on skin reduced IgE level in blood and prohibits the proliferation of mast cell, from which it can be known that cypress essential oil can be effectively used to reduce the symptoms of atopic dermatitis.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2018년도 추계학술대회
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• pp.26-27
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• 2018

유전 자원에 대한 접근 및 이용에 따른 이익의 공정한 공유를 표방하는 나고야 의정서가 발효되면서, 최근 국내 천연자원을 이용한 바이오 소재 및 제품 개발 연구에 많은 지원이 이뤄지고 있다. 국내 화장품 연구 및 개발 동향은 기존의 합성 화합물 중심에서 벗어나 안전성이 확보된 천연 바이오 소재 중심으로 변화하고 있다. 또한 기능성화장품의 범위가 기존에 크게 미백, 주름개선, 자외선 차단 3가지에서 염모, 탈모 완화, 여드름 완화, 아토피성 피부의 보습 등으로 세분화 및 추가됨으로써 화장품 연구 개발의 범위가 확대되었다. 이러한 기능성 화장품 범위 확대, 화장품 소재에 대한 안전성 규제 강화, 동물실험 금지 등 화장품 연구 환경 변화로 인해 다양한 천연물 기반의 생물학적 활성을 갖는 유효 성분들이 기능성 화장품 소재로 연구되는 사례가 점차 증가하고 있다. 충북은 바이오산업을 지역 특화산업으로 선정하여 바이오산업 육성을 위한 중부권의 오송생명과학단지/오창과학산업단지와 북부권 제천 바이오벨리 조성, 충주기업도시 등을 통해 바이오 제약 및 화장품 기업 유치 와 바이오 산업클러스터를 완성해 가고 있다. 이와 더불어 오송생명과학단지 내에 위치한 오송화장품임상연구지원센터는 충북 지역 중소 화장품 기업들의 글로벌 시장 진출 및 동남아 수출 지원을 위해 임상시험, 효능평가, 해외 인증, 해외시장 박람회 등의 지원을 중점적으로 수행하고 있다. 이러한 하드웨어 인프라 조성과 함께 충북의 천연 소재를 이용한 다양한 국책 연구 개발 사업을 추진하여 충북 특화자원인 황기, 오미자 뿐 아니라 두충, 익지인, 소목 등을 이용한 화장품 소재 개발 연구를 수행하고 있다. 충북지역 기업체 및 연구기관을 중심으로 천연물의 지표 및 유효 물질 원료 확보와 이를 활용한 기능성 화장품 제품화가 본격적으로 추진되고 있어 향후 충북 천연물 산업은 화장품 산업을 중심으로 더욱 성장해 나갈 것으로 기대된다.

• 복식
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• 제44권
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• pp.181-199
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• 1999

The industry of modern clothing has deviated from the overflow of commercialism and the standardization and nowadays is going toward pursuing art, creativity, and high added value. This trend brings the return of the natural materials from the synthetic textiles and increases the value of old and handmade fabrics. Finally, the handmade-paper, which is a natural material, comes to be reconsidered as a new material for the clothing. Therefore, as the natural materials and the manufacture of handmade clothing are rising again, the qualitative improvement and globalization of clothing industry should be first realized through the developments of creative and various clothing materials and new expressing techniques. The above investigation and study have been synthesized and analyzed as follows: First, through the study on the origin of the paper clothing, its historical background and the process of its development, we've learned these two facts following : the paper clothing of the East in the past mostly had practiced meanings. On the other hand, in the West it had meanings which were raised the artist's emotions and beauty-consciousness to the artistic level by the various kinds of expressing methods. Second, handmade-paper was manufactured by the embedding method, which mixed mulberry pulp, gauze, corn, hair, sisal, silk and so on. It was found that handmade-paper had the affluent and proper texture as the clothing material and was be able to control the clarity through the variation of thickness. It was also confirmed that the creative and original texture with hand-worked molding beauty was obtained by the use of handmade-paper. Third, when the handmade-paper is used, the molding beauty of plane, relievo, and solid can be freely pursued, and various and effective molding conformation can be constructed by the effect of superposition and repetition. Also, because the maximum discretion from the various optional manufacturing methods is allowed, the molding beauty can be maximized when the clothes are manufactured with handmade-paper. Fourth, the gauze with strong drape was combined to overcome the stiffness and the tearing of the paper. As a result, the durability and the wearability of the paper were strengthened and thus the thus the applications as the clothing material were enlarged. In conclusion, in order to enhance the value, creativity, practicality, and artistic sense of the design for modern clothing, the clothes made of handmade-paper should be more studied. Moreover, for the generalization of paper clothes, the studies on the development of practical paper with paper with water resistance, post-treatment after dyeing, flexibility, and durability should be done. I really hope that this study will be the motive to provoke the possibility of handmade-paper as new clothing material in not only practical sense but also artistic sense.