In Vitro Fertilization and Embryo Cleavage in Canine Oocytes

Hae }ung Kim,Sang Ryeul Lee,Sin Hae Park,Sung Hyun Kim,Bong Soo Kim,Dong Hun Yoo,Sin Hae Park,Mi Jung Shin,Jae Wook Kim,Zae Young Ryoo 한국동물생명공학회(구 한국동물번식학회) 2006 Reproductive & developmental biology Vol.30 No.2

형제 유·무에 따른 성격특성의 비교

박경숙,박정인,이정림,조혜정 연세대학교 생활과학대학 1985 婦學 Vol.18 No.-

The aim of this research was to make a comparative analysis of personality traits among children with more than 2 siblings, with only 1 sibling, and those without siblings. The subjects were 117 pupils in the 5th grade, selected from 4 elementary schools in Seoul. The instrument for the study was a standardized personality inventory developed by Bum Mo Chung. The data were analysed with two­way analysis of variance in which the independent variables were sex and the number of siblings. The major results were: ⑴ the personality traits of the children were influenced more by sex differences than by the number of siblings, and ⑵ the personality of the boys was found to be more active, impulsive, and dominant than that of the girls, while the personality of the girls was more reflective than that of the boys.

청소년의 스마트폰 중독과 우울 및 불안과의 관계

김경은,김필송,민주연,박수경,신서인,이지은,정해인,조호정,최정원,최정인 이화여자대학교 간호과학대학 2013 이화간호학회지 Vol.- No.47

Purpose: The purpose of this study was to investigate the relationships between the degree of smart phone addiction among adolescents and their depression and anxiety levels. Method: In this study, 379 high school students were selected using the convenient sampling method. The instruments used for this study were smart phone addiction measure, the CES-D (Center for Epidemiological Studies-Depression Scale), and the STAI (State-Trait Anxiety Inventory). Data were analyzed using the SPSS 20.0 program with descriptive statistics, t-test, ANOVA with Scheffe test, and Pearson’s correlation coefficient. Result: The mean score for smart phone addiction was 40.45±17.27, depression was 36.56±9.58, state anxiety was 44.00±9.61, and trait anxiety was 45.70±9.75. There were significant differences between the degree of smart phone addiction and the following variables: gender (t=-4.953, p<.001), hours of smart phone use per day (F=12.259, p<.001), types of frequently used features (F=3.485, p=.008), and satisfaction level for smart phone (F=5.18, p<.001). There were statistically significant relationships (p<.001) among degree of smart phone addiction, depression level, and state and trait anxiety levels. Conclusion: The results of this study suggested that there was a significant relationship between smart phone addiction and mental health, specifically, depression and anxiety among adolescents. Further research is needed to develop nursing strategies to provide care for adolescents who frequently utilize smart phones.

농촌지역 노인들의 인지기능 장애와 사망과의 관련성

선병환,박경수,나백주,박요섭,남해성,신준호,손석준,이정애,Sun, Byeong-Hwan,Park, Kyeong-Soo,Na, Baeg-Ju,Park, Yo-Seop,Nam, Hae-Sung,Shin, Jun-Ho,Sohn, Seok-Joon,Rhee, Jung-Ae 대한예방의학회 1997 예방의학회지 Vol.30 No.3

The purpose of this study was to examine the mortality risk associated with cognitive impairment among the rural elderly. The subjective of study was 558 of 'A Study on the Depression and Cognitive Impairment in the Rural Elderly' of Jung Ae Rhee and Hyang Gyun Jung's study(1993). Cognitive impairment and other social and health factors were assessed in 558 elderly rural community residents. For this study, a Korean version of the Mini-Mental State Examination(MMSEK) was used as a global indicator of cognitive functioning. And mortality risk factors for each cognitive impairment subgroup were identified by univariate and multivariate Cox regression analysis. At baseline 22.6% of the sample were mildly impaired and 14.2% were severely impaired. As the age increased, the cognitive function was more impaired. Sexual difference was existed in the cognitive function level. Also the variables such as smoking habits, physical disorders had the significant relationship with cognitive function impairment. Across a 3-year observation period the mortality rate was 8.5% for the cognitively unimpaired, 11.1% for the mildly impaired, and 16.5% for the severly impaired respendents. And the survival probability was .92 for the cognitively unimpaired, .90 for the mildly impaired, and .86 for the severly impaired respondents. Compared to survival curve for the cognitively unimpaired group, each survival curve for the mildly and the severely impaired group was not significantly different. When adjustments models were not made for the effects of other health and social covariates, each hazard ratio of death of mildly and severely impaired persons was not significantly different as compared with the cognitively unimpaired. But, as MMSEK score increased, significantly hazard ratio of death decreased. Employing Cox univariate proportional hazards model, statistically other significant variables were age, monthly income, smoking habits, physical disorders. Also when adjustments were made for the effects of other health and social covariates, there was no difference in hazard ratio of death between those with severe or mild impairment and unimpaired persons. And as MMSEK score increased, significantly hazard ratio of death did not decrease. Employing Cox multivariate proportional hazards model, statistically other significant variables were age, monthly income, physical disorders. Employing Cox multivariate proportional hazards model by sex, at men and women statistically significant variable was only age. For both men and women, also cognitive impairment was not a significant risk factor. Other investigators have found that cognitive impairment is a significant predictor of mortality. But we didn't find that it is a significant predictor of mortality. Even though the conclusions of our study were not related to cognitive impairment and mortality, early detection of impaired cognition and attention to associated health problems could improve the quality of life of these older adults and perhaps extend their survival.

정상인에서 양가감정과 관련되 뇌 영역 : 양전자방출단층촬영 상관 연구

정영철,석정호,전지원,박해정,이종두,김재진 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.3

Objectives : The present study investigated the brain regions that correlate with ambivalence in schizotypy, a latent personality organization that is proposed to precede and contribute to the liability of developing schizophrenia. Methods : Using ^(18)F-FDG PET scan, we investigated the brain activity of twenty one normal healthy subjects during the resting state. Questionnaires, including the Korean Version of Schizotypal Ambivalence Scale (K-SAS), were administrated after the scan in order to assess the self-rated individual differences in ambivalence. Results : The Schizotypal Ambivalence Scale (SAS) scores showed positive correlation with the metabolic rates in the left parahippocampal gyrus and the fornix. In contrast, the Ambivalence over Expression of Emotion Questionnaire (AEQ) scores showed negative correlation with the metabolic rates in the right putamen. Although scores of the two ambivalence scales Correlated positively (Pearson correlation coefficient 0.477, p<0.050), there was no substantial overlap between the neural correlates. Conclusion : This study suggests that the hippocampal complex, which dysfunction has been reported to correlate with impaired information processing in schizophrenia, may underlie schizotypal ambivalence.

선인장 재배농가의 농업정보 요구 조사

정구현,이해길,박인태,이철희 한국농업정보과학회 2000 농업정보과학 Vol.2 No.1

This study was performed to investigate the status of using personal computer(PC) and to develope strategy to improve PC utilization of Cactus Farmers. Sixty nine farmers are surveyed to collect data. Many farmers had intention to use PC to manage Cactus and have recognized that PC is required to manage farm and to improve their life quality. As a result of analysis on farmers' need for agricultural information, they highly demanded infor-mation on production skills, marketing information, overseas production trends, imports and exports information. Some farmers using or having intention to use software for Cactus farming want software to be developed and dis-tributed to support production technolog', labor management production cost and benefit analysis etc.

CuInSe₂박막의 증착과 표면 형상의 특성

박정혜,정병두 梨花女子大學校 韓國生活科學硏究院 1993 韓國生活科學硏究院 論叢 Vol.52 No.-

Micro Raman Spectroscopy and Auger Electron Spectorscopy have been used to investigate polycrystalline CuInSe_(2) grains of different morphology. The grains larger than 2μm found on films annealed at 315℃ show Raman peaks at 174cm^(-1) and 258cm^(-1). In_(2)O_(3) is found to have formed on the surface and inside the grains the Cu : Se ratio is about 1 : 1. The 258cm^(-1) peak is thought to originate from a copper-selenide phase. 1-2μm size grains found on films annealed at temperatures below 305℃ show a Raman peak at 174cm^(-1) and an additional peak at 186cm^(-1). The Cu : In : Se ratio of these grains is about 1 : 1 : 3-4. The 186cm^(-1) peak is thought to originate from either a Se excessive or a Cu, In deficient phase when compared to stoichiometric CuInSe_(2) in the grain. Considering these properties, the optimum annealing conditions and surface morphology were obtained. Films annealed under such conditions consisted of clusters of crystals smaller than 1μm and showed a clear Raman peak at 174cm^(-1).

미세혈관 협심증 환자의 임상상 및 지표에 관한 연구

박상호,온영근,김현정,이태훈,길효욱,김현건,박수진,송해정,한대희,방덕원,신원용,이내희,김성구,권영주 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Background : Microvascular angina or syndrom X is heterogenous and encompasses different pathogenetic entities. Several studies suggest that microvascular angina have good prognosis and occurs predominantly in postmenopausal women. Lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and fibrinogen are the independent risk factor of acute coronary syndrome and are the chief underlying cause of atherosclerosis. We investigated clinical characteristics and markers in patients with microvascular angina. Methods : We studies 23 patients diagnosed with microvascular angina and 16 control group with negative treadmill exercise test and no significant coronary angiogram. We investigated clinical characteristics in patients group and evaluated symptom during a follow-up period of 4.2± 2.5 month. Exercise time in treadmill exercise test was compared between patients and control group. We assessed the level of markers, such as lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and ESR in two groups. Results : There is no difference in age between two groups. Patients group had a tendency to increase in female, hypertension, DM, and smoking history, but there was no statistical significance difference. Exercise duration time was significantly decreased in patients with microvascular angina (p<0,05). Serum lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholestrol, Triglyceride, ESR, Fibrinogen and Homocystein value were no significant difference between microvascular angina and control group. Only CRP was significantly high in patients with microvascular angina (p<0.05). Conclusion : There was no statistical significance difference in age, sex, hypertension, DM and smoking history between two groups but patients group had a tendency to increase the prevalence in hypertension, DM and smoking history, female. Also, Symptom improvement and disappearance in follow-up was presented in 11 patients of 19(57.9%). Exercise tolerance was worse in patients group than control group. CRP value was significantly higher in patients group than control group. There was no statistical significance difference in lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, ESR and Fibrinogen between two groups.

대구시 대기오염물질 배출량 산정에 관한 연구

박명희,김해동,홍정혜 한국환경과학회 2003 한국환경과학회지 Vol.12 No.1

Urnban air quality is usually worse than that of rural counterpart. The contrasting atmospheric properties seem to be direct results of different urban-rural air pollutant emission. Hence, the emission estimation of air pollutants plays an important role to the atmospheric environmental management. The main purpose of this study is to find out the temporal and spatial distribution of air pollutant emission in Daegu area. For the study, the Daegu statistical yearbook and data waste facilities and the report on traffic survey issued by Daegu metrpolitan city and the statistical yearbook on the road capacity issued by the ministry of construction and transportation are used. Each item for the emission estimation is SO_2, CO, HC, NO_??, PM-10 from point, line and area source. The result were as follows; (1) The air pollutants with the highest amount of emission from the emission source is Co fllowed by NO_??, SO_2, PM-10, HC in descending order of magnitude. (2) The annually totaled air pollutant emission consists of 81%(73,185 ton/year) of line, 11%(9.589% ton/year) of area and 8%(7,445 ton/year) of point source in Daegu. Air polluant emission was mainly due to line sources. (3) High-emission of the air pollutants of line source appeared ariond Bukgu, Dalseonggun, Dongu and seogu ; the areas with highway networks.

왜율개선과 동거제어를 위한 이산제어에 의한 UPS의 제어에 관한 알고리즘의 구현에 관한 연구

박해암,조정래 광주보건대학 1994 論文集 Vol.19 No.-

Recently UPS(Uninterruptible Power Supply) systems are widly used in a variety of fields as a highly reliable power source. But most of an UPS has a dual structure using analog circuits, digital or micro-processor for PWM and phase synchronous controller. We present algorithm and technique using a discrete control even amplitude and synchronous for an UPS in this paper. The proposed system in this paper is composed of a ROM, an A/D converter, a CTC, and a control S/W. The amplitude controller consists of the ROM written modulation index from 0.75 to 0.99 of the PWM data and the A/D converter as an error voltage detector. A timmer and counter mode of the CTC is used a controller for a phase synchronous. We have simulated the algorithm and technique by using an IBM PC/386(40MHz) as a controller, and have obtained the lower distortion and the fast response on synchronous driving as a result. From this result, we recognized that the proposed algorithm and technique is able to apply for an UPS system using only discrete control. This has an advantage in a manufacturing system, because it is able to be used at a flexible and widly applicative operation range by an adjusting a control program.