복합시술 모발의 자외선 보호처리에 따른 손상도와 색상 변화

라채숙ㆍ권수애ㆍ이옥규(hae Suk LaㆍSoo Ae KweonㆍOk Kyu Lee) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1

This study aimed to determine the effects of UV-blocking by the type of UV care agent for complex-treated hair. For this, healthy women’s hair was permed, bleached and dyed, and a Polypeptide Protein Treatment and hair sunscreen agent were applied. After that, changes in the degree of wave formation, hair surface conditions, physical properties of the hair and hair hue were examined by irradiating UVB rays. The analysis results were found as follows: In terms of the degree of wave formation, no difference was observed among UV care agents. In terms of hair surface scale, hair damage was lower when the hair was coated twice as opposed to being coated once regardless of the type of the UV care agent and treatment method. In addition, tensile strength, elongation rate and resilience rate were superior in the hair recoated with the hair sunscreen agent. In contrast, no significant difference was observed among the UV care agents in terms of damage rates. Lightness and reflected light were also high in the hair recoated with the hair sunscreen agent. In addition, the a* value, reflection and dominant wavelength were the highest in the hair with post-treatment coating for the skin while b* value, reflection and degree of irritation was the highest in the hair with post-treatment coating for hair. The said results can be summarized as follows: The UV care agent revealed effective UV-blocking effects by maintaining the wave formation and preventing hair damage. When UV rays were irradiated, the hair for post-treatment product was the most efficient in maintaining hair color.

여자중학생의 하복 착용 및 관리 실태

이성자,권수애 충북대학교 교육 ·생활연구소 생활과학연구센터 2002 생활과학연구논총 Vol.6 No.1

This study was conducted to provide guidelines that will improve the school uniforms for middle school girl's. It examined the following in-depth: the use of the summer school uniforms, actual conditions of use and management. Four schools whose uniform designs are different were selected, and among them, 505 girl's in senior year took part in the study. Questionnaires were used to collect the data. The results are as follows: 1) Examining the external appearance, the following are noticed: In general, blouses are white, single-breasted, and the length is abdominal(circumference) line. Skirts are dark blue or checked and A-lined with one or two pleats in front. Regarding the materials, the combination of polyester and rayon are used. It has been pointed out that there is much room for improvement in comfort and design. 2) The average satisfaction level was founded in the following when wearing blouses: the dynamism, the maintenance of external appearance/ease care. On the contrary, the high satisfaction level was founded in the following: maintainability of shape, sanitation/comfort, design/external appearance. In particular, the study revealed the low level of satisfaction in design/external appearance and sanitation/comfort of both blouses and skirts.

여고생의 의복착용과 구매행동

권수애,이진희,서정은,차윤숙,김은영 충북대학교 교육생활연구소 2001 생활과학연구논총 Vol.4 No.-

The purpose of this study was to investigate the wearing and purchase behavior of clothing among girls' high school students. The subjects of this study were 393 girls' high school students in Chongju. The data were collected by questionnaires and analyzed by frequencies and χ2 -test. The results were as follows: 1)Most of girls' high school students wore plain clothes 2-4 days per a week when they went out after school, and the seventy percents of them tended to exchange their clothing each other and to modify their school uniform. 2)In a purchase behavior, they use the display in stores to seek for information regarding clothing products and they were supported by their parents for buying their clothes. Also, most of them purchased their clothes once or twice a season. About thirty five percents of them, purchased their clothes in famous brand stores. 3)The frequency of purchasing clothing products was related with the variables of allowance. self-perceived economic state, the frequency of wearing plain clothes, and the exchange of clothes.

活性슬러지法에서 溶存 酸素 制御에 의한 處理效率과 에너지 節減에 關한 硏究

金秀生,李賢珠,權成根 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1

This paper aiming at the energy reduction, aerated constantly and intermittently(on : 30, off : 30 ; on : 30, off : 50) by the dissolved oxygen control, showed the results as followings, according to HRT variation is artificial wastewater similar to municipal wastewater. 1. The were a little difference respectively in BOD removal efficiency, 96.7% and 95.5%, of constant and intermittent aeration(on:30, off:30), when F/M ration of 0.16㎏-BOD/㎏MLSS·d was fixed. The reduction in electricity cost was 50±5% in intermittent aeration. 2. Substrate removal rater(㎞) were 3.08hr^(-1), and 2.02hr^(-1), respectively, in constant and intermittent aeration(on : 30, off : 30 ; on : 30, off : 50). 3. The respective Sludge Volume Indexes(SVI) were 100∼179㎎/l, 100±20㎎/l, and 100±20㎎/l, with variation of HRT, 4, 6, and 8 hours when operated twice times in constant aeration.

14각형 헥사아자 거대고리 구리(II)착물과 음이온의 반응에 미치는 리간드의 치환기 효과

姜信杰,李成得성득,權在槿,鄭守炅 大邱大學校附設 基礎科學硏究所 1991 基礎科學硏究 Vol.8 No.-

Reactions of copper(In complexes of 1, 8-dimethyl-, 1, 8-diethyl-, and 1, 8-dipropyl-1, 3, 6, 8, 11, 13-hexaazacyclotertradecanes(A, B, and C, respectively) with halide and pseudohalide ions have been studied in aqueous solutions by spectrophotometric method. It is observed that the equilibrium constants(K) of these reactions decrease with the ligand structure in the order A> B>C for anions and decrase with the anions in the order SCN^(-)>N_(3)^(-)>Br^(-)>Cl^(-) for complexes. The values of K increased with increasing temperature. Thermodynamic parameters obtained from the equilibrium constants are investigated.

Baculovirus를 이용한 Aujeszky's Disease Virus gⅢ 단백질 발현

송재영,이중복,현방훈,박종현,김병한,권창희,전무형,안수환 충남대학교 생물공학연구소 1993 생물공학연구지 Vol.3 No.-

The g Ⅲ gene located in U_L region of Yangsan strain, a field isolate of Aujeszky's disease virus (ADV) in Korea, was cloned into pTZ18R and sequenced. The gⅢ gene consisting of 1,437 nucleotides showed 98% sequence homology with that of Becker strain, a reference strain of ADV. The gene encoding gⅢ of Yangsan strain was placed under the control of Autographa californica nucleopolyhedrosis virus (AcNPV) polyhedrin promoter, and expressed by the derived recombinant baculovirus using Spodoptera frugiperda 9 (Sf9) cells. The expressed gⅢ was a protein with molecular weight of 72kd determined by immunoprecipitation and Western blotting assay using anti-ADV polyclonal antibodies and anti-gⅢ monoclonal antibody. The partially purified gⅢ protein was utilized as antigen in the radial immunodiffusion enzyme assay (RIDEA) to detect to specific antibody against ADV in pig sera. The results indicated that the sensitivity of RIDEA with the recombinant gⅢ protein antigen (98%) was as high as that with the conventional glycoprotein antigen extracted from the ADV infected cells. In addition, the false positive and false nagative reactions in gⅢ RIDEA were significantly reduced than the conventional glycoprotein RIDEA as judged from the results of standard serum neutralization test.

밑면이 가열된 五方形 空間내의 熱對流에 관한 數値解析

서해원,서이수,권순석 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.-

The theoretical study addresses the nature of motions and heat transfer in confined rectangular enclosure heated from below and colled on the top simultaneously subject to themal wall conditions that the side walls are insulated or cooled alternately. Also the flow dynamics and the characteristics of convective performance are argued in the numerical scheme by using Grashof no. and Reynolds no. as variable parameters according to the moving conditions in which the natural convections are discussed for fixed condition and the forced and mixed convection also discussed for moving wall at constant speed. It is envisaged that follows below The circulation velocity caused by the buoyant effects exhibits the tendency toward increasing at low Reynolds no., especially this trend is obvious near Re=100. As Re no. is increased, the vortexflow produced at the corners in the low part is inclined to develop thus reduce heat transfer, especially this phenomenon turns to be clear by the advancement of multi-cell at Gr=10^5 and Re=400∼500. The vortex also occurs in the corner under the natural convection, however the effects of the eddy on the heat transfer seems to be more insignificant than in the forced and mixed case. It is also shown that the point at which heat transports best tends to shift from right to left as Re no. is increased, and the reduction of heat transfer neighbouring the wall side is remarkable inproportion to Grashof number.

머리염색이 인체에 미치는 영향

윤형식,황성호,이현륭,김수호,박연석,권낙현,정호진,김동훈,노현주,홍성호,박병찬,이관,정해관 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

일상생활에서 모발염색은 흔히 접할 수 있는 미용의 한 종류로 특히 젊은층을 중심으로 폭발적으로 유행하고 있다. 염색을 위항 사용하는 약제는 표백제와 발색제 등 각종 화학약품이 사용되고 있으나 이로 인한 건강장해에 대한 연구는 그리 많지 않다. 저자들은 염색이 인체의 모발건강에 미치는 영향을 파악하기 위하여 염색과 관련된 주관적 증상과 모발의 변화에 대한 실험적 연구를 시행하였다. 동국대학교 경주 캠퍼스 재학생 80명을 대상으로 설문조사를 시행하여 염색 유 ·무 및 염색 후에 경험한 증상에 대해 설문 조사하였고, 의과대학 재학생 46명을 대상으로 피부 반응 테스트를 실시하였다. 또한 염색 전후의 모발 탄성도를 측정하였고 모발의 상태를 파악하기 위해 전자 현미경검사를 실시하였다. 설문조사 결과 염색 전에 비하여 염색 후 안구혼탁, 안구건조, 시력저하, 발진 및 접촉성 피부염, 모발손상, 모근손상 등의 증상을 더 많이 경험한다고 호소하였다(p<0.05). 모발손상과 모근손상은 헤어드라이어 사용 빈도에 따라 증가하는 것으로 조사되었다(p<0.05). 피부반응검사에서 가려움증이 가장 많은 증상이었으며 이는 여성보다는 남성에서 높은 것으로 조사되었다. 염색 전후의 모발장력은 염색 전 134.5±10.37g, 염색 128.0±30.69g, 염색 이틀 후 112.5±19.69g으로 나타났다. 염색 전후의 모발의 전자현미경 케라틴 층이 현저히 감소하고 모발이 가늘어지는 차이를 보였다. 염색은 모발손상, 모발 케라틴 손상 및 모근 손상, 발진 및 접촉성 피부반응, 안구혼탁, 안구건조, 시력 저하를 유발한다. 따라서 염색약으로 인한 손상에 대한 주의와 예방이 필요하다고 생각한다. 예방대책으로 염색 전 피부테스트를 통한 적합성 여부를 판단하는 것이 필요하며 가급적 염색을 피하는 것이 좋을 것이다. 염색약에 발암물질이 포함되어있다는 보고도 있어 염색 제조사의 철저한 실험과 염색 물질의 선별이 염색으로 인한 부작용을 최소화하는데 중요한 역할을 할 것이다. Hair coloring has became one of the most popular cosmetic activities to younger generations during last decade. However, there are few studies on the health effect of widespread use of chemical dyes. This study was conducted to study the effects of hair coloring dye on hair and other systems. We conducted a questionnaire survey of 80 persons in Kyongju campus, Dongguk University. We have done open patch skin test on 46 medical students. We also conducted scanning electron microscopy to examine the hair strength and structure before and after hair coloring process. Injury of hair and hair bulb, contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity were the main symptoms complained after hair coloring (p<0.05). Injury of hair and hair bulb were increased by frequency of hair-dryer use(p<0.05). In open patch test, pruritus was complanined by more than half of the subjects. Mean strength of hairs before and after hair coloring was as follows; 134.5 (SD 10.37)g before hair coloring, 128.0 (SD 30.69)g immediately after hair coloring, and 112.5 (SD 19.69)g after two days. The scanning electron microscopic findings of hair surface before and after hair coloring showed decreased keratin layer and thinning of the hair. Hair coloring induces injury to hair, its keratin layer, and hair bulb as well as contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity. Therefore, we think that precaution is needed in use of hair coloring dye. To prevent complications induced by hair coloring dye, it is necessary, especially to those with allergy or skin disorders, to perform skin test before action and avoid hair coloring whenever possible. Longterm health effects of hairdye should be studied and manufacturing companies should try to minimize complications induced by hair coloring dye.

마이크로 공장을 위한 디지털 생산 시뮬레이션

박상호,정영상,송준엽,이승우,김동훈,이수훈,박종권 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

Existing manufacturing system has consumed too much energy, space and resource in micro parts manufacturing. To improve this, micro factory system is suggested. But it is difficult to get the high reliability in the assembly, production and inspection of the minute parts because the construction of the micro factory has been started just before. In this study, we will build the digital manufacturing simulation on the micro factory's process and verify the production and assembly process using this simulation.

간질환 환자 혈청에서 ELISA를 이용한 angiogenin 측정의 평가

권기운,이숭환,이성희,김홍주,이창화,김병훈,백인규,박동일,박성수,이동후 대한간학회 1996 Clinical and Molecular Hepatology(대한간학회지) Vol.2 No.1

Backgroud:Liver fibrosis by the progression of the chronic processes of the liver diseases induces deforrned microcirculations of the hepatic lobules. And this eventually resolted in portal hypertension. On the other hands, angiogenic stimu4nt factors are physiologically activated in order to repair the tissue damage. Overexpression of angiogenic factors, however, can stimulate neovascularization as in a fonnation of the tumor that liberates uncontrolled overgrowing of the tumor cells. Methods: To elucidate the dynamic changes of the serum concentration of angiogenin in chronic liver diseases, this study is intended to employ an ELISA in 44 pathologically proven patients. Quantikiae_(TM) human angiogenin kit (R & D,systems Inc. Mmneapolis, MN) was used for this investigation. Results:Mean value and standard error of angiogenin concentration (ng/ml) of the sera was 238.92+ 50.95 in 5 cases of chronic persistent hepatitis, 184.47+ 12.75 in 6 cases of chronic active hepatitis, 131.36+ 10.99 in 19 cases of liver cirrhosis, and 211.03+ 19.08 in 14 cases of hepatocellular carcinoma, respectively. Serum angiogenin level in the liver cirrhosis was significantly lower than in chronic persistent hepatitis(p=0.00336), and than in chronic active hepatitis(p=0.018673). Angiogenin concentration in hepatocellular carcinomas was significantly higher than the level of the liver cirrhosis investigated(p=0.00569). Conclusions:These data support that persistent inflammatory insults in the chronic hepatitis were compensated by the elevation of angiogenin but complete fibrosis as in liver cirrhosis showed the depressed level. And emerging of the hepatocellular carcinoma is accompanied by the elevated stimuli of angiogenin for the neovascularization.