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Microemulsion을 이용하여 제조된 CdS 나노 입자 크기에 미치는 [H_2O]/[AOT] 및 Oil Phase의 영향
공현숙,박상권,임종주,박상준 한국공업화학회 2003 응용화학 Vol.7 No.1
Nanoparticles of cadmium sulfide have been synthesized by a microemulsion method two microemulsions containing cadminum ions and containing sulfide ions respectably were mixed to from cadmium sulfide nanoparticles. In order to investigate the influences of water to surfactant molar ratio(W) on the particle size, we fixed AOT, and the initial molar concentration of CD^2 and S^2 and only changed W. The effects of varying the type of continuous oil phase on the particle size have been studied. The time-course variation in the mean particle size was measured by UV-visible absorption spectroscopy.
간호학생 임상실습교육에서 실습지도자활용(preceptorship)의 교수효율성
최공옥,조현숙,김정엽 京畿專門大學 2001 京畿專門大學 論文集 Vol.- No.29
To identify the effects of preceptorship on teaching effectiveness at clinical nursing education, a group of nursing students who participate in program under the instruction of the preceptors was compared with the other group of nursing students trained by head nurses. The data were collected from 14 May 2001 to 8 June 2001. The subjects of this study were 85 nursing students trained by the preceptors in the G. medical college hospital in Inchon, and 122 nursing students trained by head nurses at several hospitals in Inchon and Puchon, Korea. The scale for measuring the teaching effectiveness developed by Kim Miae et at(1998) was employed as the tool for the study. The data collected were analysed with SPSS on the teaching effectiveness items, then mean value and SD were evaluated. The t-test was also employed to compare the teaching effectiveness of the both groups. The following findings were carried out from this study. 1) The group trained by preceptors showed significant higher teaching effectiveness statistically than the group trained by head nurses, scored mean value of 3.46 and 3.04 respectively in the item of teaching effectiveness. 2) The respective item showing high score of teaching effectiveness in both groups were 'smooth and reasonable dealing on the issues occurred in the wards', and 'well instructed in the regulations and procedures of the hospital'. But the items of 'help nursing students to familiarize with other staffs quickly' and 'help always at near' showed low scores. 3) For 5 causal factors classified on the teaching effectiveness, the factor of 'professional knowledge and capability' got the highest score, but 'availability as a supporter' showed the lowest score in both groups.
블랙푸드가 첨가된 약콩청국장분말의 영양소 및 생리활성물질 분석
공현주(Hyun-Joo Kong),박현숙(Heyun-Sook Park),김태훈(Tae-Hoon Kim),신승렬(Seung-Ryeul Shin),홍주연(Ju-Yeon Hong),양경미(Kyung-Mi Yang) 한국식품영양과학회 2013 한국식품영양과학회지 Vol.42 No.11
본 연구는 대두청국장분말, 약콩청국장분말, 그리고 흑미, 흑임자, 다시마와 같은 블랙푸드를 첨가한 약콩청국장분말의 일반성분과 영양소 및 항산화 물질을 분석ㆍ비교하여 향후 알츠하이머성 치매관리나 인지능력 향상을 위한 블랙푸드가 첨가된 청국장분말의 in vivo 실험을 위한 기초자료로 활용하고자 실시하였다. 그 결과 대두와 약콩청국장에 비해서 블랙푸드를 첨가한 약콩청국장에서 수분함량이 높았으며, 유리당 중 sucrose, fructose, glucose, maltose 함량이 높았다. 또한 수용성과 조단백질 함량은 P<0.05 수준에서 약콩청국장과 블랙푸드를 첨가한 약콩청국장에서 높았다. 불포화지방산과 포화지방산의 비율은 대두청국장에 비해서 약콩청국장과 블랙푸드를 첨가한 약콩청국장에서 높았다. 무기질 함량은 대두청국장이 가장 높았으나 약콩청국장에서는 Zn, Cr, Mn이, 블랙푸드를 첨가한 약콩청국장에서는 Fe의 함량이 높았다. Isoflavone 중 diadzein 함량은 약콩청국장에서 가장 높았으나, genistein과 anthocyanin 함량은 블랙푸드를 첨가한 약콩청국장에서 가장 높았다. 따라서 본 연구에서는 일반 및 영양적 특성에서 대두청국장에 비해서 블랙푸드로 만든 청국장분말이 유리당과 뇌조직의 구성과 기능에 필요한 수용성 및 단백질 함량과 불포화지방산과 포화지방산의 비율이 높을 뿐만 아니라 우수한 항산화력으로 보고되고 있는 diadzein, genistein 그리고 anthocyanin 함량이 높은 것으로 나타났다. 그러므로 향후 알츠하이머성 치매의 원인 및 치료기전으로 보고되고 있는 산화적 스트레스조절에 대한 in vivo 실험에 블랙푸드청국장분말을 활용할 수 있을 것으로 판단된다. This study is carried out to investigate the analysis of nutrition and antioxidants of soybean Chungkukjang powder (SCP), Yak-Kong Chungkukjang powder (YCP) and Yak-Kong Chungkukjang powder added black foods (YCBP) for the management of Alzheimer"s disease. The water content of YCBP was higher than that of SCP and YCP. The soluble and crude protein contents of YCP were the highest among three Chungkukjang powders. In SCP, YCP and YCBP, the ratios of unsaturated and saturated fatty acids were 5.17, 5.76, and 5.78, respectively. The mineral content of SCP was higher than that of YCP and YCBP. Antioxidants analysis showed that the content of diadzein was the highest in YCP and genistein, and anthocyanin contents were higher than the others in YCBP. In conclusion, YCP and YCBP had higher contents than SCP in soluble and crude proteins, and unsaturated fatty acids, which are needed for composition and function of the brain tissue. Also, it was found that the contents of diadzein, genistein and anthocyanin with outstanding antioxidative ability were high. Thus, this study suggests that Chungkukjang powder, which is made with Yak-Kong, black sesame, black rice and sea tangle, can be utilized for in vivo experiment for the control of oxidative stress, reported as cause and therapy for Alzheimer"s Disease.
Treatment of Melasma with Pulsed-Dye Laser and 1,064-nm Q-Switched Nd:YAG Laser: A Split-Face Study
( Sook Hyun Kong ),( Ho Seok Suh ),( Yu Sung Choi ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.1
Background: Melasma is an acquired pigmentary disorder that is often therapeutically challenging. Recent evidence suggests that vascular abnormalities are involved in melasma pathogenesis. Pulsed-dye laser (PDL) is considered as standard therapy for vascular lesions. Objective: To assess the efficacy of PDL combined with low-fluence Q-switched Nd:YAG laser (QSNY) in the treatment of melasma. Methods: Seventeen melasma patients were enrolled in this study. All subjects were treated with a total of nine QSNY treatment sessions at one-week intervals. Three sessions of PDL were additionally performed immediately after QSNY treatment on the half of the face at baseline, week 4, and week 8. The melasma area and the severity index (MASI) score was calculated at the baseline, one week after the last treatment (week 9), as well as at the follow-up 8 weeks after the last treatment (week 16). Dermoscopic images at the baseline were classified as to whether the visibly widened capillaries were detected or not. Results: MASI scores on the PDL+QSNY and QSNY side decreased significantly during the study period. There was no significant difference in the MASI score change between both sides in all periods. However, seven patients who had visibly widened capillaries on dermoscopy showed significant difference in both sides in terms of changes in the MASI score during treatment. Conclusion: PDL combined with QSNY may be considered as a safe and effective treatment for melasma patients who show visibly widened capillaries on dermoscopy. (Ann Dermatol 30(1) 1∼7, 2018)