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1,4-부탄디올을 이용한 양이온 제미니 계면활성제의 합성 및 물성 평가
김경실,박종권,조정은,신혜린,정노희 한국공업화학회 2019 공업화학 Vol.30 No.1
본 연구에서는 소수성 사슬의 길이를 증가시키고 1,4-부탄디올을 스페이서로 사용하여 양이온성 제미니형 계면활성제를 합성하였으며 1H-NMR로 확인하였다. 합성한 계면활성제의 외형은 백색 분말로 나타났으며, Kraffts 점은 0 ℃ 이하로 나타났다. 측정된 임계미셀농도(c.m.c)는 표면장력법에 의해 1.8 × 10-3~6.5 × 10-4 mol/L이었고 표면 장력은22.5~26.1 dyne/cm이었다. Ross-Miles 방법에 의한 CG 14-6E-14의 초기 거품 높이는 16 cm이었고 5 min 후 높이 14 cm를 나타내어, 가장 좋은 초기 기포력과 기포안정성을 갖는 것을 확인하였다. 또한, 합성한 양이온 제미니 계면활성제와 일반적으로 사용하고 있는 cetyltrimethylammonium bromide (CTAB)의 기포력 및 유화안정성을 비교하였다.
색온도가 다른 백색 LED조명환경에 따른 멜라토닌 분비경향 연구
김경실,김인태,최안섭 한국조명·전기설비학회 2012 한국조명·전기설비학회 학술대회논문집 Vol.2012 No.10
Light supports circadian rhythm as well as human's perception system. Especially, higher light intensity and shorter wavelength have acute influence on circadian rhythm. Therefore, this study focused on "short wavelength" investigated melatonin suppression according to two color temperatures with a constant light intensity(LEDs with light of 3,000[K] and 6,000[K] at 400[lx]). Ten healthy young people participated in this study to test melatonin suppression. Melatonin suppression was analysed by taking saliva samples. Melatonin secretion was analysed after sleep accordance with different luminous environments.
전통요소를 응용한 패션디자인 연구 I - 왕 의례복식의 문양을 중심으로 -
김경실 한국패션디자인학회 2007 한국패션디자인학회지 Vol.7 No.1
W i t h t h e t u r n i n t o t h e 2 1 s t c e n t u r y , p e o p l e ' s i n t e r e s t i n K o r e an culture and Korean traditional costume(Han Bok) is geting highlighted and new term of 'Han Ryu' has ben begoten. (Han Ryu Ryu is now on the move with the national interest and support. Analysis and modernization works on Han Bok especially traditional royal costume should be taken urgently when we consider its symbolic meaning, representativeness and diversity. To respond on this need, as a process of research, we explored and find the essentcharacteristics of Korean traditional royal costume, attempted to aply those elements to the costume of modern style by making it as following. As a result of our analysis of the characteristic of Korean traditional royal costume, it might be sumarized as reverence-implying loftiness, stylish and pure We observed closely the elements of its' design such as patern, color, and formation. In this paper design, motives were sought for out of traditional royal costume and hereby a few design works wearable in modern living were made. The work chose King's formal dress that is relatively open for color. Genderless characteristics of modern costume and suitableness of formal wear were also taken into consideration.Aesthetic characteristics of loftines and dignity in King's formal dres might be observed in its patern. Most prominent patern is dragon which has top position among mysterious animals. And lor in compliance with the principle of yin and yang, and in its grand fold-on-fold formation.The work produced two suits of lady's day time formal suit and an evening coat which are good in any ocasion of official or cultural event.International designers including Asian adopt traditional elements and transfer them in the fast end of cross over using between the
김경실 한복문화학회 2002 韓服文化 Vol.5 No.1
This study is to define the Plastic characteristics, shape, color, material, pattern of female court dancing suits in Chosun Dynasty. Costumes of female dancers may be classified Into 4 types. Costumes of general female dancers( -~j( it;) UP to 19th century. as most commonly seen In the Royal feasts, were similar to an egg shape - tight tops with wide bottoms. In the 20th century, skirt became less blown. In Choon-ang-jon(W.DM), green lorum and embroidered silk belt In red were added, showing beauty of static elegance. In Sun-you-ak( ~~~), costumes of female dancers appear manly and dynamic. In Gum-gi-mu( !lJiUo. costumes of female dancers make sure of activity, as the dance became more dynamic. Usually additive complementary color was used to suite of female court dancer.