친환경 세척제의 처리 방법을 달리하여 착즙한 당근 주스의 미생물 안전성 및 품질

임상욱(Sang-Wook Lim),최다정(Da-Jeong Choe),강민정(Min-Jung Kang),김종현(Jong-Hyun Kim),김묘정(Myo-Jeong Kim),김민주(Min-Ju Kim) 한국식품영양과학회 2017 한국식품영양과학회지 Vol.46 No.10

본 연구에서는 당근의 세척에 사용되는 친환경 세척제의 초기 미생물 제어 효과를 향상시키기 위해 탄산수소나트륨과 구연산의 단독 및 병합 처리 조건을 설정하였으며 저장 중 당근 주스의 미생물 수 및 품질 특성 변화를 분석하였다. 친환경 세척제의 단독 처리 방법으로는 0.5, 1, 2% 탄산나트륨수와 0.2, 0.5, 1% 구연산수를 적용하였고, 살균 효과를 비교하기 위해 무처리구, 수돗물 처리구, 50 ppm 차아염소산나트륨 처리구를 사용하였다. 당근의 세척을 위한 병합처리 방법으로는 단독 처리에서 우수한 살균 효과를 나타낸 1% 탄산수소나트륨수와 1% 구연산수를 이용하였고, 1% 탄산수소나트륨수 처리 후 1% 구연산수로 처리하는 단계적 병합 처리구가 가장 우수한 살균 효과를 나타내었다. 1% 탄산수소나트륨수와 1% 구연산수의 단계적 병합 처리구는 무처리구에 비해 일반 세균수 1.87 log CFU/mL, 대장균군 1.56 log CFU/mL를 감소시켰고, 50 ppm 차아염소산수에 비해서도 일반 세균수 1.07 log CFU/mL, 대장균군 0.22 log CFU/mL의 미생물 감균효과를 나타냈다. 1% 탄산수소나트륨수 처리 후 1% 구연산수의 단계적 병합 처리구를 4°C에서 7일 동안 저장한 결과 수돗물, 50 ppm 차아염소산수나 혼합 병합 처리구, 1% 구연산수 처리 후 1% 탄산수소나트륨 처리구에 비해 미생물 제어 효과가 확실하게 나타났지만, pH, 당도, 산도, 색도에는 유의적인 차이가 나타나지 않았다. 본 연구 결과 1% 탄산수소나트륨과 1% 구연산의 단계적 병합 처리는 당근 세척 시 초기 미생물 제어와 품질 유지에 있어 효과적인 살균처리 방법으로 비가열 당근 주스의 유통기간 동안 미생물 안전기준에 부합하며 주스의 품질을 유지할 수 있는 바람직한 세척방법으로 판단된다. The aim of this study was to evaluate the microbial inhibitory activity and physicochemical quality of fresh carrot juice prepared with different environmentally-friendly washing methods during low temperature storage. Individual and combined treatments with sodium bicarbonate (baking soda, NaHCO₃) and citric acid were applied to carrots for 10 min. Tap water and 50 ppm of sodium hypochlorite (NaOCl) were used as the control. Combined treatment of 1% NaHCO₃ and 1% citric acid significantly reduced total aerobic counts and coliforms. In addition, combined treatment of 1% NaHCO₃ and 1% citric acid inhibited microbial growth for 7 days at 4°C and 10°C in a shelf-life study. There were no significant differences among the sanitizers in terms of °Brix, acidity, pH, and color. Changes in physicochemical quality were not significantly different by sanitizer but were affected by storage temperature. These results indicate that washing with combined treatment of 1% NaHCO₃ and 1% citric acid is an effective method to inhibit the microbial population and maintain physicochemical quality. Therefore, combined treatment of 1% NaHCO₃ and 1% citric acid can be effectively used to sanitize and prepare carrot juice without affecting other properties.

도심 수목원에서의 경관감상과 산책이 인체의 생리적 안정에 미치는 영향

박범진 ( Bum Jin Park ),가재남 ( Jae Nam Ka ),이민선 ( Min Sun Lee ),김선아 ( Seon A Kim ),박민우 ( Min Woo Park ),최윤호 ( Yoon Ho Choi ),정다워 ( Da Wou Joung ),권치원 ( Chi Weon Kwon ),염동걸 ( Dong Geol Yeom ),박순주 ( Soon Jo 한국산림과학회 2014 한국산림과학회지 Vol.103 No.4

This research was conducted to investigate the impact of viewing scenery and walking in the urban forest onphysiological relaxation of humans. The experiment was conducted in Hanbat Arboretum located in Daejeon, and thecontrol experiment was conducted in front of Daejeon City Hall. The subjects that participated in the experimentcomprised 24 Korean male university students in their 20s (average age, 21.1±2.5 years), participated in the experimentas the subject, and these subjects were classified into three groups divided into three locations such as the pine forest inArboretum, the pond in Arboretum, and the city. The subjects sat down and viewed scenery for 10 min, and they thenwalked for 15 min. Further, physiological changes were measured using indicators such as heart rate variability (HRV),blood pressure, and pulse rate. As a result, when subjects viewed scenery and walked in the urban forest, a statisticallysignificant increase in the high frequency (HF) power of HRV and decrease in systolic pressure was observed comparedwith when subjects viewed scenery and walked in the city. Through this research, it was found that activities like viewingscenery or walking in Arboretum of the city are effective in increasing the physiological relaxation of the city residents.

데이터 글러브를 이용한 손 제스처 기반 3차원 게임 구현

유다연,권차욱,곽지민,백화현,김이조,차경애 대구대학교 정보통신연구소 2010 情報通信硏究 Vol.7 No.1

데이터 글러브(Data Glove)는 손 제스처를 정의하여 시스템을 제어하는 입력장치로 가상현실기술 및 교육, 의료, 산업분야에서 많이 사용되고 있다. 이는 가상현실 속에 존재하는 사물을 현실에서 제어하게 함으로써 사용자에게 마치 현실 세계의 사물을 제어하는 느낌을 주는 장점을 가지고 있다. 이에 본 논문에서는 이러한 데이터 글러브의 장점을 이용하여 3차원 게임에 적용시키는 방법을 제안한다. 먼저 데이터 글러브로 제스처를 정의하고, 트래커(Tracker)와 연동하여 시스템을 구현한다. 구현된 시스템을 실험하기 위해서 OpenGL로 인형 뽑기 게임을 구현하고 사용자가 데이터 글러브를 착용 후 정의된 제스처를 통해 게임을 제어하도록 한다. 본 논문에서 제안한 방법은 사용자들에게 좀 더 높은 몰입감을 제공하며, 향후 게임 산업 발전에도 많은 영향을 줄 것으로 기대한다.

자연의 아름다움과 고급스러움이 공존하는 마임 비에타 쇼룸 제안 -오감 (시각, 청각, 후각, 촉각, 미각)을 중심으로-

김보현,이서연,은다솜,엄연정,이진민,장미정,이성애 숙명여자대학교 산업디자인연구소 2017 숙명디자인학 연구 Vol.24 No.-

본 연구는 국내 브랜드 ‘마임'의 뷰티와 연계한 뷰티 쇼룸을 제안함에 있어서 공간속에 오감을 담아내는 일련의 프로세스를 밝히는데 목적이 있다. 이는 브랜드가 소유하고 있는 다양한 감각과 가치가 결여된 채 시각적 요소만이 담긴 브랜드 뷰티 쇼룸이 대다수를 차지하는 오늘날, 이에 대한 문제를 해결하기 위해 ’융합 연출 디자인'적 시점에서 폭넓게 바라보고 브랜드의 정신과 오감의 결합을 통해 이를 해결하고자 하였다. 이에 본 연구는 2017년 3월~6월 15주간 숙명여대 환경디자인학과 <융합연출 디자인>수업에서 진행된 수업의 결과물로서 산학 연계된 화장품 브랜드의 쇼룸디자인 개발 프로세스를 제안한다. 또한 본 연구의 범위는 오감을 담고 있는 뷰티 쇼룸(4D)이 되기까지의 과정 전체로 한다. 그 결과, 마임 뷰티쇼룸은 공간 디자인과 오감을 융합하여 영상에서 공간에 이르기까지 오감의 조화와 브랜드의 정신을 녹여내고 확장시켰다. 끝으로 본 연구는 뷰티 쇼룸 공간 디자인을 제안함에 있어서 오감을 활용하여 통합된 시점에서 그래픽·제품·공간을 개발 및 제시한 것에 의의가 있다. 또한 향후 이와 관련된 쇼룸 공간 개발에 있어서 기초 자료로 활용될 것으로 기대된다.

Whole-genome resequencing analysis of 20 Micro-pigs

Da‑Hye Son,Nam‑Hyun Hwang,Won‑Hyong Chung,Ha‑Seung Seong,Hyungbum Lim,Eun‑Seok Cho,Jung‑Woo Choi,Kyung‑Soo Kang,Yong‑Min Kim 한국유전학회 2020 Genes & Genomics Vol.42 No.3

Background Miniature pigs have been increasingly used as mammalian model animals for biomedical research because of their similarity to human beings in terms of their metabolic features and proportional organ sizes. However, despite their importance, there is a severe lack of genome-wide studies on miniature pigs. Objective In this study, we performed whole-genome sequencing analysis of 20 Micro-pigs obtained from Medi Kinetics to elucidate their genomic characteristics. Results Approximately 595 gigabase pairs (Gb) of sequence reads were generated to be mapped to the swine reference genome assembly (Sus scrofa 10.2); on average, the sequence reads covered 99.15% of the reference genome at an average of 9.6-fold coverage. We detected a total of 19,518,548 SNPs, of which 8.7% were found to be novel. With further annotation of all of the SNPs, we retrieved 144,507 nonsynonymous SNPs (nsSNPs); of these, 5968 were found in all 20 individuals used in this study. SIFT prediction for these SNPs identified that 812 nsSNPs in 402 genes were deleterious. Among these 402 genes, we identified some genes that could potentially affect traits of interest in Micro-pigs, such as RHEB and FRAS1. Furthermore, we performed runs of homozygosity analysis to locate potential selection signatures in the genome, detecting several loci that might be involved in phenotypic characteristics in Micro-pigs, such as MSTN, GDF5, and GDF11. Conclusion In this study, we identified numerous nsSNPs that could be used as candidate genetic markers with involvement in traits of interest. Furthermore, we detected putative selection footprints that might be associated with recent selection applied to miniature pigs.

축구 로봇의 전략 알고리즘 개선

김재헌,이대훈,이성민,최환도,김중완 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

This paper presents an strategy algorithm of a soccer robot. We simply classified strategy of soccer robot as attack and defense. We use DC-motor in our Soccer Robot. We use the vision system made by MIRO team of Kaist and Soty team for image processing. Host computer is made by Pentium III. The RF module is used for the communication between each robot and the host computer. Fuzzy logic is applied to the path planning of our robot. We improve strategy algorithm of soccer robot. Here we explain improvement of strategy algorithm and fault of the our soccer robot system.

건조 재료를 사용한 콘크리트의 포장화에 관한 실험적 연구

한다희,박희곤,백민수,김성식,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

Most concrete is recently made of an aggregate which is properly absorbed, and earned in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.

안내염과 대장암이 동반된 재발성 간농양

전승정,김태헌,류민선,오다연,송명은,이신아,류재인,김혜인,문일환,유권 이화여자대학교 의과학연구소 2011 EMJ (Ewha medical journal) Vol.34 No.2

The causes of pyogenic liver abscess has been known as biliary tract disease or intrabadominal infection but the large proportions of the patients has no apparent underlying disorders. Recently colonic mucosal lesions were reported in patients with cryptogenic liver abscess and it has been suggested that colonic mucosal break may play a role in developing liver abscess in otherwise healthy patients. We experienced a patient of severe recurrent liver abscess complicated with endophthalmitis only 3 months after successful treatment of initial cryptogenic liver abscess and a polypoid colon cancer was discovered by chance. It seems prudent to proceed colonoscopic examination in patients with cryptogenic liver abscess especially when it is recurrent.

간호사의 이미지에 따른 간호전공만족도

가미정,김수미,김영경,남수진,오루미,육지수,이혜인,최미나,최혜민,허다은 이화여자대학교 간호과학대학 2010 이화간호학회지 Vol.- No.44

Purpose: The purpose of this descriptive study is to examine the correlation between nursing students’ perception of nurses and the level of their satisfaction with the major. Method: The survey was done with the total number of 192 nursing students from 10 different universities in S city selected by a convenience samplingmethod. In order to measure the perception of nurses, the measurement which was invented by Lee(1992) and revised by Jang(1998) was used. Also, the measurement designed by Shim, and modified by Kim(2007) was used for measuring of the students’ satisfaction in their major. The collected data was analyzed by SPSS 17.0. Results: 1.The most decisive factor of the conceptualization of the image of nurses for the nursing college students is their experience of meeting nurses as a patient. 2. Students reconsider the role of nurses by experiencing immediate relationships with nurses in field training. 3. Other factors of the survey such as the students’academic year, religion, the field training situation (individual experience, type of the hospital where they experienced the training, and a relationship with the nurse in charge of the training) or the existence of nurses among their family members do not affect the students’ satisfaction. 4. There is a positive correlation between the image of nurses of nursing college students and their satisfaction with the major(0.66). Conclusion: The positive image of nurses is directly related to the students’ satisfaction in the nursing major, which hugely affects on their academic achievements and decisions of career path. Therefore, there should be more efforts to increase the positive perception of nurses among nursing students.

Reports : Structure-activity relationships of the intramolecular disulfide bonds in coprisin, a defensin from the dung beetle

( Jae Ho Lee ),( Da Eun Lee ),( Hye Min Choi ),( Ha Hyung Kim3 ),( Ho Kim ),( Jae Sam Hwang ),( Dong Gun Lee ),( Jae Il Kim ) 생화학분자생물학회(구 한국생화학분자생물학회) 2014 BMB Reports Vol.47 No.11

Defensins, which are small cationic molecules produced by organisms as part of their innate immune response, share a common structural scaffold that is stabilized by three disulfide bridges. Coprisin is a 43-amino acid defensin-like peptide from Copris tripartitus. Here, we report the intramolecular disulfide connectivity of cysteine-rich coprisin, and show that it is the same as in other insect defensins. The disulfide bond pairings of coprisin were determined by combining the enzymatic cleavage and mass analysis. We found that the loss of any single disulfide bond in coprisin eliminated all antibacterial, but not antifungal, activity. Circular dichroism (CD) analysis showed that two disulfide bonds, Cys20-Cys39 and Cys24- Cys41, stabilize coprisin’s α-helical region. Moreover, a BLAST search against UniProtKB database revealed that coprisin’s α-helical region is highly homologous to those of other insect defensins. [BMB Reports 2014; 47(11): 625-630]