동위효소 분석에 의한 느타리속의 종간 유연관계

이희경,유영복,차동열,민경희 ( Hee Kyung Lee,Young Bok Yoo,Dong Yeul Cha,Kyung Hee Min ) 한국균학회 1998 韓國菌學會誌 Vol.26 No.2

연령에 따른 한국인 손 피부색 차이 분석

홍다검ㆍ이희경ㆍ이정현(Da Geom HongㆍHee kyung LeeㆍJeong Hyun Lee) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1

Recently, nail industry trends have been shifting from polish nail to gel nail. Because of the popularity of gel nail, the criteria for customers to choose colors have significantly changed. Therefore, there has been a rising demand for a nail color which goes well with skin color, not with the color of clothes, makes the hand more beautiful. Unlike a face, hand skin color isn’t corrected through makeup. Therefore, it is more difficult to find a color which is well matched with the skin tone. In this sense, the accurate analysis and classification of hand skin color which is the first step in the selection of nail color are required. However, it’s still very hard to find studies on hand skin color. To figure out the characteristics of Koreans’ hand skin color by age, this study analyzed differences in hand skin color by age after measuring the tone of the back of the hand and conducting quantitative analysis against 300 women living in Busan, Ulsan and Gyeongnam. The results revealed statistically significant difference (p.001). As the respondents were younger, a bright skin tone was observed. According to analysis on the distribution by the rank, ‘20s’ was the highest with 46% among those with a bright skin tone within top 100 ranks. In top 300 ranks, in contrast, ‘50s’ was the highest with 46% while ‘20s (8%)’ was the lowest. In terms of a skin tone, there was a considerable difference between ‘20s’ and ‘50s.’ Even though no big difference was found between ‘30s’ and ‘40s,’ a skin tone was brighter in the latter.

Computerized Sperm Motility Analyzer를 이용한 Human Sperm의 Hyperactivated Motility의 객관적 관찰에 관한 연구

이희경,이찬,김현숙,김영태,김선행,구병삼,Lee, Hee-Kyung,Lee, Chan,Kim, Hyun-Sook,Kim, Young-Tae,Kim, Sun-Haeng,Ku, Pyoung-Sahm 대한생식의학회 1994 Clinical and Experimental Reproductive Medicine Vol.21 No.1

The occurrence and time course of capacitation, acrosomal loss, and hyperactivated motility require quantitative definition in order to characterize fertile human sperm. Recently the method has been developed to estimate the quality of spermatozoa by using kinematic parameters such as curvilinear velocity(VCL), average path velocity(VAP), linearity(LIN), straightness(STR), amplitude of lateral head displacement(ALH), and beat cross frequence(BCF) from Computer Assisted Sperm Analysis (CASA). In this study, using the Hamilton Thorn motility analyzer HTM 2030(Hamilton Thorn Research, Beverly, MA), we attempted to identify the spermatozoa with hyperactivated motility (HA) objectively and to monitor hyperactivation of human spermatozoa during incubation in capacitating media and after treatment of calcium ionophore as compared with acrosome status. And we examined whether HA are related to the result of SPA. Semen samples obtained from 16 healthy men were prepared by swim up technique and preincubated in a capacitating media(modified BWW medium) for 5 hours and treated with calcium ionophore solution. The acrosome reaction was detected with PSA-FITC labelling of the acrosome and in vitro sperm ferilizing capacity was assessed by the zona free hamster ovum penetration assay (SPA). The incidence of hyperactivated sperm was 2.6% in fresh semen, 14.3% of the swim up population, 13.7% after 5h of incubation. Significant increase of percentage of hyperactivated sperm was observed after the incubation (p<0.05) but after treatment, no significant changes of percentage of hyperactivated sperm(l1.8%) in contrast to significant rise in the percentage of acrosome reacted cells. Correlation analysis failed to show any significant relationship between the percentage of sperm with HA and SPA score. In conclusion, although no direct correlations were found between the results of SPA and HA, hyperactivation of sperm is associated with capacitation and monitoring hyperactivated sperm will be expected as a method of evaluating the functional quality of sperm such as SPA.

치과기공사의 스트레스 연구

이희경,Lee, Hee-Kyung 대한치과기공학회 1994 대한치과기공학회지 Vol.16 No.1

This study attempted to find out how much stress Dental Technicians of working in Dental Laboratory have built up in the midst of their daily lives are according to their sex, age, duration of work and their kinds of positions. After self-administered questionnaire were distributed by direct to 230 technicians samplely selected from dental laboratories in Seoul and Pusan of whom 163 technicians responded from october 1 through october 13, 1994. Analysis of the data was processed by t-test, $X^2$-test, ANOVA. This results are as follows. 1. Levels of Stress of the total 163 respondents by sex is not higher among male than female(p>.05). 2. Levels of stress - 36.2%(74 Dental technicians) of all Dental technicians were in stress on the whole and 9.2%(15 Dental technicians) of them were in a serious situation by accumulated stress. 3. Realization of stress - 10.1%(16 Dental technicians) of the dental technicians and 89.9%(143 Dental technicians) were found out to be in a dangerous sign or in a situation by accumulated stress. Further studies which a big size and a delicate method of measuring their general characteristics are needed.

여성치과기공사의 직업의식에 관한 연구

이희경,김정숙,정효경,Lee, Hee-Kyung,Kim, Jeong-Sook,Jung, Hyo-Kyung 대한치과기공학회 2010 대한치과기공학회지 Vol.32 No.3

Purpose: This study was conducted to corroborate factors affecting dental technicians recognition states of their job consciousness. Methods: Self-administering questionnaires were distributed directly to some 200 registered female dental technicians in metropolis, small & medium-sized cities, farming and fishing villages of whom 153(76.5%) female dental technicians and female students responded in December, 2009. Information on recognition states of female dental technicians and female students in department of dental technology possible occupational mind and other general characteristics was gathered. Analysis of data was processed by use of X2-test and multiple regression analysis. Results: The recognition states of occupational satisfaction were higher in female students than female dental technicians(p<.05). They were observed that between respondents with more than five years of work and less than five years of career(p<.05). Statistically significant differences were observed in recognition values of female dental technicians occupational satisfaction between high and low groups of internal characteristic of their position and all ceramic part(p<.05). Conclusion: For woman dental technicians, the most predictive variables for recognition values of occupational satisfaction were an age, between groups, which of part and career(p<.05). Finally, this result suggests the facts that in order to achieve self-realization through the work experience, women herself should get rid of the dichotomous diagram and should change the consciousness of traditional role normals.

증숙 더덕 에탄올 추출물에 대한 항산화·항균 활성

이희경,최온유,최두복,최현숙,Lee, Hee-Kyung,Choi, On-Yu,Choi, Du-Bok,Choi, Hyun-Suk 한국식품영양학회 2021 韓國食品營養學會誌 Vol.34 No.1

This study was investigated the contents of total polyphenol, flavonoids and antioxidant and antimicrobial activities of Codonopsis lanceolata extracts according to different steaming times. The contents of total polyphenol and flavonoid proportionally increased from 6.45 mgGAE/g to 18.26 mgGAE/g and 2.01 mgRE/g to 6.12 mgRE/g according to ethanol extracts at EDS7. DPPH radical scavenging activity was found to have been 15.26~65.2% and showed the highest level of antioxidant activity at EDS7 was 65.2%. The activity of ABTS radical scavenging and SOD-like activity were also the same result. DPPH and ABTS radical scavenging activity was related to the number of steaming, and the scavenging activity was increased up to 7 times of steaming. The antimicrobial activity of EDS7 had strong antioxidant activity. Antimicrobial activities were examined against 5 microorganisms related to pathogens and food poisoning. The antimicrobial Activity was different depending on the bacteria, but it was effective at the concentration of 300 mg/mL rather than 150 mg/mL. These results showed that Codonopsis lanceolata extracts with a different number of steaming would be conducted to confirm the possibility of developing antimicrobial and antioxidant. It will be helpful in the study of component analysis of Codonopsis lanceolata extracts processed products.

원저 : 공중구강보건학 분야 ; 일부 농촌지역 노인에서 치아상실과 심혈관질환 위험요인의 관련성

이희경 ( Hee Kyung Lee ),송근배 ( Keun Bae Song ),이성국 ( Sung Kook Lee ),박지혜 ( Ji Hye Park ),최연희 ( Youn Hee Choi ) 대한구강보건학회 2008 大韓口腔保健學會誌 Vol.32 No.4

중국 당대(當代)사회의 변화와 수치심

이희경(Lee, Hee Kyung) 인제대학교 인간환경미래연구원 2016 인간 · 환경 · 미래 Vol.- No.17

개혁개방 이래 중국은 극심한 변화를 겪었고, 그 속에서 중국인들의 가치관과 감정 역시 빠르게 바뀌었다. 대다수 중국인들이 스스로를 역사의 피해자로만 인식하고 있던 80년대에 바진의 수상록은 중국사회가 극좌노선으로 경도된 데에 일정한 역할을 했던 자신을 부끄럽게 여김으로써 지식인의 비판정신을 되살리고 있다. 1988년 방영된 다큐멘터리 하상(河殤)은 서구식 현대화를 이루지 못한 낙후된 현실을 인식한 데에서 비롯된 부끄러움을 대중매체를 통해 드러내었다. 90년대 ‘시장경제’체제 하에서 이뤄진 사회자원의 재분배는 지식인들의 사익추구 붐을 불러일으켰다. 당시의 유행어 ‘샤하이(下海)’는 그들이 느끼는 부끄러움이 도덕적 측면에서 물질적 측면으로 점차 옮겨가고 있음을 보여준다. 이즈음, 일부 지식인들은 상업화의 물결에 휩쓸리는 지식계를 비난하며 ‘인문정신’의 회복을 주장했다. 지식과 예술의 가치는 물질적 잣대로 가늠할 수 없으므로 순도자적인 태도로 그 본질을 지켜야 한다는 이들의 주장은 상당한 공감을 얻었으나, 지식인의 생존 문제를 사회구조적 측면에서 접근하지 않고 도덕적 입장만을 강조하며 해결하려는 한계를 보여주었다. 상업화의 물결이 더욱 거세진 21세기 중국에서 물질에 대한 욕망은 정신적 가치들을 제치고 가장 실제적이고 유일한 욕망으로 자리매김한다. 이에 따라 중국인들이 느끼는 수치심 역시 물질생활과 더욱 긴밀하게 연결되는데, 위화의 소설 형제와 산문집 사람의 목소리는 빛보다 멀리 간다는 물질의 소유여부가 수치심을 느끼는 거의 유일한 기준이 되어버린 현 중국의 모습을 비판적으로 드러내준다. Since its reform and openness, China has gone through extreme changes, including the people’s sense of values and emotion. In the 1980s, most people thought they were the victims of history. However, through his essay Sui Xiang Lu(Random Thoughts), Ba Jin admitted that he felt shame, as he was partly responsible for historical tragedy like the Cultural Revolution. The documentary He Shang(River Elegy) had shown the shame caused by the awareness of reality that China did not accept western modernization and remained weak. In 1990s, the redistribution of social capital created a boom for the pursuit of private interest. In those days, some of the intellectuals criticized the commercialization of the intellectual circles, and agitated the recovery of “humanistic spirit”. Their claims gained sympathy of many people, but they were obstructed as they approached the problem of existence of the intellectuals only with morals and not from the aspect of the social structure. As the Chinese society is becoming more and more commercialized in the 21st century, the desire for material wealth has defeated the moral values and has actually become the only aspiration. Through Yu Hua’s novel Brother and his essay China in Ten Words, we can find that material possessions became the only criterion for feeling shame in China.

유아교구 개발을 위한 3D 프린터 활용 방안에 관한 연구

이희경(Lee Hee Kyung) 한국어린이미디어학회 2015 어린이미디어연구 Vol.14 No.4

본 연구는 유아교구 개발을 위해 3D 프린터 활용 방안을 연구하기 위해 이루어졌다. 연구 목적은 첫째, 유아교구개발을 위해 어떠한 3D 프린팅 기술이 필요하며, 어떠한 교구의 제작이 가능한지 모색해보고 둘째, 유아교구 개발에 활용될 수 있는 3D 프린터에는 어떤 것이 있는지에 관해 알아보는 것이다. 연구방법은 2013년 이후에 발간된 3D 프린팅 관련 문헌 조사를 중심으로 이루어졌다. 구글(Google)과 한국학술연구정보(KRIS)에서 검색한 3D 프린팅 관련 논문 및 저널 17편, 그리고 3D프린터 관련 도서 5권과 인터넷 신문 기사들을 분석하였다. 연구결과, 3D 프린팅의 과정은 모델링, 프린팅, 후처리의 과정이며, 입체물의 모델링은 3D 디자인 프로그램의 활용, 완성되어 있는 3D 디자인의 활용, 3D 스캐너의 활용으로 가능하다. 유아교구개발에 적합한 프린터는 FDM, LOM, Jetting 방식의 프린터와 3D 프린팅 pen이 있으며 프린팅의 소재는 친환경 재료의 PLA나 Wood 필라멘트가 적합하다. This study was conducted how to adapt 3D printing technology in teaching materials production for young children. Research questions are as follows: 1. What kind of technology of 3D printing is needed in production of teaching materials for young children and what kinds of teaching materials can be produced by 3D printing technology. 2. What kind of printers are suitable for the production of teaching materials. For this study, I researched the documents related to 3D printing reports published recently. These are 17 thesis searched by Google and KSLI, 5 books and news papers article on the internet. As the result of this study, 1. 3D printing process for teaching materials production are 3D modeling, 3D printing and post processing of designed output. Especially, the 3D modeling works can be done by using 3D CAD programs and by using the 3D Scanner. 2. The printers appropriate to the printing of teaching materials are FDM, LOM, Jetting and 3D pen. And the suitable printing materials for young children. are PLA, Wood eco friendly.

함초(Salicornia bigelovii) 추출물의 라디칼 소거능과 Acetylcholinesterase 저해 효과

이희경(Hee-Kyung Lee),최현숙(Hyun-Sook Choi),조기안(Ki-An Cho),최온유(On-You Choi),고하영(Ha-Young Koh),김란(Ran Kim) 한국화장품미용학회 2017 한국화장품미용학회지 Vol.7 No.1

This study was to investigate the extraction yield, total polyphenolics and flavonoid contents, radical scavenging activity, and acetylcholinesterase inhibitory activity of various extracts from Salicornia bigelovii. The extraction yields of hot water, ethanol, acetone, ethylacetate, and hexane were 18.8%, 15.4%, 2.6%, 13.3%, and 3.2%, respectively. The total polyphenolics and flavonoid contents in hot water extract (HWE) and ethanol extract (EE) were significantly higher than in acetone (AE), ethylacetate (EAE), and hexane extracts (HE). The total polyphenol and flavonoid contents were highest in EE (0.89% and 0.39%), followed by HWE (0.76% and 0.25%), AE (0.45% and 0.18%), EAE (0.36% and 0.14%) and HE (0.28% and 0.11%). ABTS radical scavenging activities in 10㎎/L of extracts were in the following order: EE (48.97%)> HWE (18.92%)> AE (14.32%)> EAE (12.50%)> HE (10.37%). In addition, the acetylcholinesterase inhibitory activity was observed in the same tendency as seen with the ABTS radical scavenging activity. These results suggest that the ethanol and hot water extracts from S. bigelovii may be used to develop various functional food and cosmetic products.