치매방지 작업기구 사용이 항산화효소 활성에 미치는 영향

조경혜,박정은,윤지윤,문세보,박효영,정인옥,이정원 서울여자대학교 자연과학연구소 2001 자연과학연구논문집 Vol.13 No.-

We developed an occupational therapy tool to maintain and improve the cognitive function for the elderly who have senile dementia. 86 elderly people took a mininal mental state examination (MMSE) for the therapy to perform the occupational therapy, and divided into three groups based on avarage ages and MMSE values. The occupational therapy was treated three times per week for 10 weeks. The results showed that there were significant differences in the performing scores before and after the treatment ; the scores for the occupational therapy were increased significantly (p<0.001) and the performing time was shortened from 6-week throughout 10-week regimen. This study was to examine the effect on the activity of antioxidant enzymes by occupational therapy. The activities of antioxidant enzymes such as catalase, Glutathion-6-phosphate dehydrogenase (G6PDH), and superoxide dismutase (SOD) were increased to the normal standard by the occupational therapy for the elderly having dementia. The recovery of activities of antioxidant enzymes was obvious in severe demented elderly compared to those in normal or mild demented elderly. These results suggest that the occupational therapy had an beneficial effect on the protection against the oxidative stress especially for severe demented elderly, and the occupational tool need to be modified so as to improve the protection against the oxidative stress for normal and/or mild demented elderly.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

간호대학생의 MBTI 성격유형과 학습태도, 학업성취도간의 상관성

정현경,김명수,유연자,김수옥,원대영 대한간호행정학회 2007 간호행정학회지 Vol.13 No.4

Purpose: This study was to explore the relationship between personality type and learning attitude and academic achievement of nursing students. Method: 91 students were sampled from freshman in nursing school. Data were collected from April 2 to October 5 2007. Analysis of the results were carried out using SPSS win 12.0 for frequency, mean and standard deviation, t-test, ANOVA, Pearson correlation. Result: The result of MBTI test was that nursing students in this study showed extraversion(52.7%), sensing(82.4%), thinking(56.0%), judging(57.1%). Academic achievement according to personality was that only feeling(F) type students had significantly higher score of English than thinking(T) type students(p=.013). Learning attitudes according to personality were that sensing(S) type students had significantly positive attitude toward their college than intuition(N) type students (p=.016). And think(T) type students had significantly higher confidence of learning than feeling(F) type students. There was significant positive correlations between learning method and score of English, Fundamental Nursing, Anatomy(p<05). Conclusions: Diagnosing personality can differentiate student's learning attitude. It is important to develop teaching-learning strategies according to their personality, which can help them to improve their academic achievement.

하지 분절 각도에 따른 수의 등척성 수축(MVIC)시 근전도 비교

김정자,이민형,김연정,채원식,한윤수,권선옥 한국운동역학회 2005 한국운동역학회지 Vol.15 No.1

J. J. KIM, M. H. LEE, Y. J. KIM, W. S. CHAE, Y. S. HAN, O. KWON. Comparison of the maximum EMG levels recorded in maximum effort isometric contractions at five different knee flexion angles. Korean Journal of Sport Biomechanics, Vol. 15, No. 1, pp. 197-206, 2005. The purpose of this study was to quantify the maximum EMG levels and determine if there are differences in these EMG levels with respect to different knee flexion angles. Eight university students with no known musculoskeletal disorders were recruited as the participants. The maximum voluntary isometric knee extensions and flexions were taken from each participant sat on the isokinetic exercise machine (Cybex 340) at five different knee flexion angles (10?30?50?70? 90?. After surface electrodes were attached to rectus femoris, vastus medialis, vastus laterlis, biceps femoris, and semitendinosus, maximum EMG levels at five different knee flexion angles were measured. The results showed that there was no significant difference in maximum EMG levels among five different knee flexion angles. Although there was no significant difference in EMG levels and were some variations among different knee flexion angles, the EMG signals of quadriceps in extension and biceps femoris in flexion were the greatest at 30? It seems that different joint angles or relative locations of body segments might affect the magnitude of EMG levels. Because the maximum EMG levels could change with a different knee flexion angle, an attempt should be made to more accurately measure these values. If then, %MVIC measure provides more reliable data and is most appropriate for EMG normalization.

태양광 발전시스템의 최대전력추적을 위한 DC/DC 컨버터 제어

최연옥,서진연,장용해,정삼용,조금배 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2

Solar energy converters were used to convert the electrical energy from the solar arrays to a stable and reliable power source. The object of this paper is to analyze and design DC/DC converters of different types in a solar energy system in order to investigate the performance of the converters. A simple method which combines a discrete time control and a PI compensator is used to track the maximum power point of the solar array. The system is kept to operate close to MPPT's thus the maximum possible power transfer from the solar array is achieved. Experimental tests were carried out for buck, boost and buck-boost converters using a simple maximum power point tracking algorithm.

패류중 중금속함량에 관한 연구

신현수,허옥순,이진하,김세은,주인선,신동우,강석종,박만종,김지연,김근희,강숙경,정래석,허숙진,소유섭,최장덕,문병우,김진수 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-

본 연구는 패류중 중금속함량 측정을 위한 분석효율이 높고 간편한 분해법을 찾아내어 그 방법에 의끓 유종중인 패류중 중금속함량을 파악하고자 수행하였다. 시료를 분해시키는 Microwave와 습식, 건식회법을 비교한 결과 변형습식회화르가 가장 적합하였다. 변형습식회차딘는 려린0,3+C104+H2SOf의 혼찰산을 쪼 · j 1 (v/v)의 비율로 혼합하여 사용하였 을 때 회수을 Pb린틴. Cd 97.8, Cu 94.2, Zn 92.8%를 나타내었근 분해시간은 2~2.5시간 소요되었다. 유통중인 패류중 중금속함량 」최소~최대(평균), mgAgl 은 Pb 0.028~o.528(0.153), Cd 0.OO7~1,832(0.587), Cu 0.360~37.375(4.6691, Zn 6.317~233.2iO(38.881), Hg 0.001 ~O.151(0.012)mg/ltg으로 나타났다. 또한 유통중인 5종의 패류중 중금속평균항량이 생산지 하재지역에서 구입한 패류에 비해 모든 중금속언써 약간 높은 함량을 보였으나 오염된 수준이 아닌 자연함유량수준이었다. This study was conducted to improve the digestion method for the determination of heavy metals in shellfishes and to estimate the contents of heavy metal in commercial shellfishes by their digestion method. This digestion method was compared microwave with wet and dry ash digestion for shellfish samples, obtained results showed that the modified wet ash Ⅱ digestion was convenient and easy to use. For the modified wet ash Ⅱ digestion, The mixed acid of HNO₃+HClO₄+H₂SO₄(25:5:1, v/v) was used. Under this condition, Recoveries were Pb 94.3, Cd 97.8, Cu 94.2 and Zn 92.8% and digestion time was ∼2.5 hours. The contents of heavy metal [minimum∼maximum (mean), mg/kg in commercial shellfishes were as follows ; Pb:0.028∼0.528(0.153), Cd:0.007∼1.832(0.587), Cu:0.360∼37.375(4.669), Zn:6.317∼233.250(38.881), Hg:0.001∼0.151(0.013). The contents of heavy metal in commercial shellfishes of five species were slightly greater than those of shellfishes purchased at Hajae. There was no great difference between the contents of heavy metal of Hajae and those of shellfishes purchased at Whole market.

Caffeine이 지구성 운동 수행능력에 미치는 영향과 억제성 아미노산에 의하여 활성화되는 이온통로의 조절작용

김은경,김영표,천병옥,이계영,김연정,임백빈,조영욱,김창주,김성수 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

To investigate the effect and mechanism of caffeine on endurance exercise, two experiments were performed. First, to test caffeine effect on aerobic exercise, 200-300g Sprague-Dawley rats were used and three groups, control group, low caffeine injection group and high caffeine injection group, were divided. Blood smpling by heart puncture were done at rest, after 30 min treadmill exercise, and after maximal exercise. Blood glucose, free fatty acid concentration were detected and following results were obtained. Glucose concentration showed significant difference between groups(p=0.0305) and also significant changes were exhibited between time(p=0.0004). Free fatty acid concentration had no difference between groups. but had significance between times(p=0.00065). Exercise endurance performance time showed significant difference(p=0.02350 in high caffeine injection group compared to control group. In this experiments, endurance exercise capacity was increased by caffeine injection. Therefore, second experiment was performed to investigate the effect of caffeine on ion current induced inhibitory amino acid neurotransmitter. GABA and glycine. Single periaqueductal gray neuron was acutely dissociated and nystatin perforated patch clamp was performed under voltage clamping condition. Caffeine evoked outward current in PAG neuron dose dependent manner. 1mM of caffeine application had no response. but 3mM caffeine evoked about 32.5±8.539pA outward ion current and 10mM caffeine evoked about 215.46±19.4pA outward current. 10^-2mM GABA activated Cl￣current and recorded by inward current. Caffeine inhibited GABA activated Cl￣ current concentration dependent manner. 10^-2mM of caffeine had no effect on 1-^-2mM of GABA response. but 10^-1mM caffeine inhibited GABA activated Cl￣ current about 5.74±2.13%, 1mM caffeine inhibited about 17.25±2.70%, 10mM caffeine inhibited GABA response about 45.31±7.71%. 10^-1mM of glycine activated Cl￣ current and also recorded by inward current. Caffeine inhibited glycine activated Cl￣ current concentration dependent manner. 10^-2mM caffeine decreased glycine activated Cl￣ current about 4.61±1.650%, 10^-1mM caffeine decreased about 6.49±2.24%, 1mM caffeine decreased about 26.82±4.27%, and 10mM caffeine decreased glycine response about 94.47±1.39%. These results suggest that caffeine inhibite inhibitory amino acid, GABA and glycine, this response causes excitation of CNS and this seems to be the basic mechanism of increasing effect to aerobic exercise performance by caffeine.

전통음식에 대한 경북지역 주부들의 의식 및 실태조사

한재숙,한경필,성선향,조연숙,박경숙,김현옥,정종기 동아시아식생활학회 2000 동아시아식생활학회지 Vol.10 No.6

The purpose of this study was to survey the awareness and use for traditional foods of housewives in Kyong-buk area. The results were as follows : Residental areas were city(43.9%) and the county(56.1%). Region were divided as the north resources circle(28.3%), the east coast circle (21.0%), the middle west circle (21.7%), and the south city circle (29.0%). The performance degree of times and seasons of the year customs was Seolnal, Chuseuk, Daeboreum and Dongji in order. Preparation foods of Seolnal were deukguk, vegetablejeon, fishjeon, namul and gangjeung in order. Preparation foods of Chaseuk were songpeon, vegetablejeon, namul, fishjeon and fruits in order. The country foods were sikhae, muk, pumpkin, golbangiguk, yakga and potato in order.

Bulky Mono-substituted Catechol and ortho-Benzoquinone: Crystal Structure of 4-(2-phenyl-isopropyl)-ortho-benzoquinone

Ok-Sang Jung,Yangha Cho,June-Ho Jung,Youn Soo Sohn Korean Chemical Society 1994 Bulletin of the Korean Chemical Society Vol.15 No.8

Effects of cultural environments on the phenolic compounds from Solanum melongena L. based on metabolomics

Youn Ok Jung(정연옥),Jun Young Kim(김준영),Seung Kyu Ahn(안승규),Duck Seon Park(박덕선),Suk Soon Bae(배석순),Hyun Ju Son(손현주),Kwan Hyun Nam(남관현),이영둘(Young Dul Kim),Mi Suk Gi(지미숙),Sun His Jung(정순희) 한국약용작물학회 2014 한국약용작물학회 학술대회논문집 Vol.2014 No.2