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HPLC/DAD에 의한 보중익기탕 중의 글리시리진산 정량분석법의 확립
백주현,김선민,안지원,조창희,오미현,조정희,이미경,김효진,Baek, Ju-Hyun,Kim, Sun-Min,Ahn, Ji-Won,Cho, Chang-Hee,Oh, Mi-Hyune,Cho, Jung-Hee,Lee, Mi-Kyeong,Kim, Hyo-Jin 대한약학회 2008 약학회지 Vol.52 No.1
A high performance liquid chromatographic (HPLC) method for the determination of glycyrrhizic acid was developed for the quality control of traditional herbal medicinal preparation Bu-Zhong-Yi-Qi-Tang (BZYQT), which is well-known herbal medicine used as tonic. RP-HPLC analysis was carried out using Capcell pak $C_{18}$ MG column $(5\;{\mu},\;150{\times}4.6\;mm)$ and a mobile phase consisting of acetonitrile and water containing 0.03% phosphoric acid (pH 2.46) at a flow rate of 1.0 ml/min. The optimum wavelength for the detection of the glycyrrhizic acid was found at 250 nm using diode-array UV/VIS detector. The glycyrrhizic acid in BZYQT shows good linearity $(r^2>0.999)$ in the range of $15\;{\mu}g/ml$ to 500 ${\mu}g/ml$. The limit of detection (LOD) was less than 5 ng and R.S.D for intra-day and inter-day reproducibility was less than 7%. The mean recovery of the glycyrrhizic acid was $97.3{\sim}113.0%$. These results suggest that the developed HPLC method is simple and efficient, and could be contributed for the quality control of commercial BZYQT products.
향장(香粧) 용어의 성립배경과 화장(化粧)문화의 변화-시각적 화장에서 후각적 화장으로의 변화를 중심으로-
백주현 ( Ju Hyun Baek ),채금석 ( Keum Seok Chae ) 한국의류학회 2017 한국의류학회지 Vol.41 No.2
Modernization drastically changed the cosmetic culture of Korea and Japan. A classic case that shows this is the appearance of the term `Hyangjang (香粧)`. This paper investigated the background to the formation of the term Hyangjang (香粧), and reviewed the aspects of cosmetic culture that changed with the emergence of Hyangjangpum (香粧品), or cosmetics containing perfume. The investigation revealed that the term Hyangjang (香粧) appeared for the first time in Hirano (1899), a literature published in the Meiji period in Japan, and that the new term Hyangjang (香粧) had been formed against the background of advanced Western synthetic perfume and played an important role in contemporary techniques for the manufacture of cosmetics. The term Hyangjang (香粧) and cosmetics containing perfume, or Hyangjangpum (香粧品) were then introduced from Japan to Korea. In Korea, the term `Hyangjang (香粧)` appeared for the first time in an advertising copy written by Hyeon Hui-un, a pioneer of the Korean modern theater movement during the period of Japanese colonial rule. At that time, cosmetic companies in Korea and Japan were releasing cosmetic products that contained perfume that stimulated a women`s desire to purchase them by emphasizing `fragrance` in their advertising. Existing public tendencies to regard a fragrant smell from a made-up face as vulgar were changing and the public perception of fragrance were also changing. The appearance of Hyangjangpum (香粧品) indicates that the existing cosmetic culture revolving around visual sense changed into a complex cosmetic culture involving olfaction. This change in culture is significant in that it heralded the direction of future development towards cosmetic culture that uses increase combinations of different senses including touch, taste, and hearing.
백주현(Ju-Hyun Baek),김주덕(Ju-Duck Kim) 한국화장품미용학회 2014 한국화장품미용학회지 Vol.4 No.1
The purpose of this study was to examine womens awareness and state of face cleansing, satisfaction level and purchase behavior of face-cleansing cosmetics in an effort to provide some information on how to make ones skin stay healthy and clean and on marketing for cosmetics. The subjects in this study were 616 female residents in Seoul and Busan who were in their 10s through 50s. After a survey was conducted, the collected data were analyzed by the statistical package SPSS WIN 18.0, and x<SUP>2</SUP>(Chi-square) test and frequency analysis were carried out. The major findings of the study were as follows: First, as a result of analyzing the womens awareness of cleansing, many(59.6%) thought cleansing had extra effects on the improvement of the skin other than making the skin clean. 66.1 percent had a preference for bubbly cleansing products, because they thought a lot of foam would be more effective at washing away makeup and bodily wastes. Regarding the effects of cleansing products, the largest group(39.3%) considered foam cleansing products effective, followed by cleansing oil(34.4%). Second, concerning the state of facial cleansing and satisfaction level, 76.1 percent washed their face differently in the morning and evening. The biggest group(35.7%) washed their face with foam cleansing only in the morning, and the second largest group(48.2%) did double cleansing in the evening. As for water temperature, the greatest group(80%) used lukewarm water, and the biggest group(74.8%) finished washing their face with cold water. As a result of asking whether they used cleansing products suitable for their skin type or not, the largest group (54.9%) replied they had no idea. One noteworthy finding was that 60.8 percent of the teens used the same cleansing products with their families together. Third, as for the purchasing behavior of the women, the greatest group (31.3%) bought cleansing products mainly at one-brand shops. Regarding the reason, many of them answered its convenient to do. Many(28.1%) acquired information on cleansing products from their families or friends. As to shopping orientation for cleansing products, the largest group (60.7%) purchased new products from time to time. When they purchased cleansing products, many(25.0%) gave priority to cleansing effects. The findings of the study showed that not many of the women used facial cleansing products suitable for their own skin type. Women should have the right understanding of cleansing to make the right choice of cleansing products in accordance with their own skin type and makeup state, and companies should make a sustained effort to boost their marketing efforts to inform the necessity of diverse cleansing products and to develop quality
e-비즈니스 환경에서 eCRM을 이용한 보험회사의 마케팅 전개 사례 연구
백주현(Ju-Hyun Baek),김태영(Tai-Young Kim) 한국산업경영시스템학회 2010 한국산업경영시스템학회지 Vol.33 No.1
This paper reviews a case study of the use of eCRM weblog analysis for understanding of customer information and Customer-specific marketing Strategy by Korea's leading insurance company with the changing situation of the business environment due to the introduction of e-Business. This study examines how eCRM Solution is introduced and how range used in the insurance industry, and discuss the business performance and operational effectiveness of eCRM Solution.
1920~1930년대의 백분(白粉)광고에 나타난 미(美) -근대 화장광고시대의 미적 표현-
백주현 ( Ju Hyun Baek ),채금석 ( Keum Seok Chae ) 한국의류학회 2019 한국의류학회지 Vol.43 No.2
Perceptions of beauty change and are shared with others in the media of emotional words. In the modern age, a mix of traditional and modern make-up cultures has changed the standards of beauty. Therefore, an analysis using emotional words (an image that consumers have for certain subjects) and an image scale that intuitively shows them can be an important means for understanding changes in the “beauty of the time”. This paper considered changes in typical aesthetic characteristics that women pursued through make-up by analyzing emotional words in white make-up powder advertisement texts from the 1920s through the 1930s. Imported modern technologies changed cosmetic manufacturing techniques and advertising methods to create a momentum that changed women's make-up culture from light to heavy make-up or from white to color make-up. Such changes have led to changes in the perception of beauty and were expressed through sensitive vocabularies such as pure, new, fresh, lofty, lively, healthy, and cheery. Such changes reflect social aspects such as women's aspirations for high status, pursuit of security, or women's roles under the wartime regime to show a change from beauty with an attribute of [+cool] to that of [+soft].
고분자 재질로 제작된 내압용기의 안전성 예측을 위한 해석적 접근법
정지혜(Ji-Hye Jeong),김현영(Hyun-Young Kim),안중근(Joong-Keun An),백주현(Ju-Hyun Baek) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
In the small household appliances system, in an efficient and hygienic to use of a lot of pressure vessel of plastic material. It is necessary to reflect on the design in order to produce a stable structure, and reduce the failure by predicting a weak position before producing the pre-task. Compare to typical steel, polymer material is way more ductile. Thus, it is not easy to analytically validate. In this work, the fracture ductility in accordance with the pressure of the pressure vessel fabricated by PP is a strong polymer material were studied a method of predicting. To the toughness values that can take into account the growth and the criterion of reduction in the mechanical properties. Area obtained by integrating the Stress-Strain curve due to the pressure change. It was defined as fracture toughness due to pressure. It was analyzed followed by its structural simulation with commercial structural analysis software (ANSYS) and using the breaking pressure obtained through actual experiments was applied to the analytical criteria. Polymer material through this method propose a method for predicting the fabricated parts determined analytically.
레이저 스캐너의 틸트 각도 조절을 통한 다양한 환경에서의 연석 탐지 및 추종
이동욱(Dong-Wook Lee),이용주(Yong-Ju Lee),송재복(Jae-Bok Song),백주현(Joo-Hyun Baek),유재관(Jae-Kwan Ryu) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.11
When a robot navigates in an outdoor environment, a curb or a sidewalk separated from the road can be used as a robust feature. However, most algorithms could detect the curb only in the straight road, and could not detect highly curved corners, ramps, and so on. This paper proposes an algorithm which enables the robot to detect and follow the curbs in various types of roads. In the proposed method, the robot tilts a laser scanner and computes the error between the predicted and the measured distances to the road in front of the robot. Based on this error, the curbs at corners and curves can be classified. It is also difficult to detect a curb near a ramp because of its low height. In this case, the robot also tilts a laser scanner to detect the curb beyond the ramp. Once the robot classifies the road into the curve, corner, ramp, the robot selects the proper navigation strategies depending on the classified road types and is able to continue to detect and follow the curb. The results of a series of experiments show that the robot can stably detect and follows the curb in curves, corners and ramps as well as the straight road.
김형수(Hyung Soo. Kim),김홍기(Hong Gi. Kim),김주진(Ju Jin. Kim),백주현(Ju Hyun. Baek) 한국정보과학회 1995 한국정보과학회 학술발표논문집 Vol.22 No.2A
추론을 통해서 얻은 객체에 대한 결과를 가지고 의사 결정을 내릴 수 있는 데 우선 추론을 행함에 앞서 객체가 내포하고 있는 정보 즉, 사실과 규칙에 대한 논리적 정형화로써의 지식베이스의 구축이 우선되어야 한다. 이런 점에서 본 연구는 대학입학의 전형 데이타의 정보를 검색하기 위한 로직프로그래밍에 대해 다루고 있다. 일차 순서로직에 기초하여 관계를 표현하고, 데이타의 내용을 조작하기 위한 관계해석과 질의어에 대한 데이타 간의 매칭의 적법성을 기계적 증명인 분해방법 증명법을 다루고, Prolog언어를 이용한 로직프로그래밍의 예로써 대학 입학 전형 정보의 검색을 위한 전문가 데이타 베이스 시스템의 프로토타입을 제시하고자 한다.