• Korean Journal of Pharmacognosy
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• v.28 no.3
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• pp.138-142
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• 1997

To elucidate antidiabetic activity of Lycii Fructus. The extract of the Lycii Fructus was subjected to bioactivity-guided fractionation. The extract of the Lycii Fructus was partitioned suceesively with hexane, dichloromethane, ethylacetate and butanol. The butanol fraction, which is most abundant in the Lycii Fructus was subjected to silica gel column chromatography and resulted in seven fractions namely Fr. I - Fr. VII. Among tested several subfractions, Fr IV. Showed the highest antidiabetic activity in the streptozotocin-induced model rat.

• Biomolecules & Therapeutics
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• v.4 no.3
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• pp.291-295
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• 1996

For the screening of antidiabetic effect, this study was carried out to some natural products by measurements of glucose level. MeOH and $CH_2Cl_2$ extracts of natural products were investigated for the effect on glucose level of $N_2$-STZ diabeted Rat. Among the natural products, Dioscorea Rhizoma, Trichosanthes Radix, Nelumbis Semem and Lycii Fructus were shown a remarkable antidiabetic effect.

• Journal of Nutrition and Health
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• v.3 no.3
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• pp.125-128
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• 1970

• 한국노년학
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• v.29 no.2
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• pp.395-405
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• 2009

This study aims at providing an upgraded suggestion to improve satisfaction for the family caregiver. This study was conducted to find the relationship between satisfaction and family support and outcome indicator to investigate the factors that have influence on the satisfaction. The study population was 126 families of 5 elderly residing in institutionalized elderly homes in seoul and kyunggi. The data collection was measured satisfaction, family support, and outcome indicator instrument. The satisfaction showed meaning relationship with outcome indicator and family support. Explainary power of independent variables of product index was 23%. Factors influencing satisfaction for the family was economic level, family support and outcome indicator. This study was done to give suggestions to improve family caregiver satisfaction and to serve as a basis for policy strategies by examining the current conditions of the nursing facilities.

• Animal cells and systems
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• v.3 no.4
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• pp.365-367
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• 1999

A new goerid caddisfly, Goera jaewoni n. sp. (Trichoptera: Goeridae), is described from Korea. Larval stages of G. interrogationis Botosaneanu and G. parvula Martynov are also reported for the first time based on reared specimens. Line-drawings of the key characters and taxonomic and ecological notes are provided.

• Nuclear Engineering and Technology
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• v.56 no.7
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• pp.2676-2682
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• 2024

Despite its remarkable socioeconomic development, South Korea underperforms in terms of female labor force participation and women in leadership positions. As women appear to avoid nuclear engineering, we aim to evaluate its relative performance in attracting women to its labor force compared to other college majors. Using college-major level information from 2000, we test whether the female faculty share in nuclear engineering is lower than its counterparts. Although nuclear engineering has one of the lowest female faculty shares, its share exceeds that of agricultural science, business and economics, chemical engineering, chemistry, civil engineering, and industrial engineering once we properly control for gender composition among students and other compounding factors. In other words, once female students major in nuclear engineering, they are less likely to leave their fields compared to their counterparts in other disciplines. This result implies that if the nuclear engineering field aims to attract more women to its workforce, it is important to target them from the early stage of their careers.

• Journal of Home Health Care Nursing
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• v.19 no.2
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• pp.195-203
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• 2012

Purpose: This study is conducted to investigate the stress level, stress source and stress coping of nursing students in college. Methods: This study was a cross sectional survey and the data was collected from 341 nursing students by means of self-reported questionnaires from April 2 to May 31, 2012. Collected data were analyzed on SPSS win 18.0. Results: The nursing students experienced moderate levels of stress. The source of stress for students came from 'one's own self'. The most common stress coping used by students was 'make a wish'. There were significant differences in the source of stress and the stress coping according to the nursing students' year of school and other general characteristics, such as motivation of entrance and satisfaction in school life. Conclusion: These results suggest that it is important to develop stress management program and strategies based on nursing students' individual characteristics and sources of stress.

• Journal of Microbiology and Biotechnology
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• v.10 no.5
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• pp.595-598
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• 2000

Aeromonas hydrophila is a pathogen to fish as well as human. It is a food-borne disease, and causes severe mortality in fish, and sometimes severe septicemia in human. In this study, a rapid detection method using latex agglutination has been developed for A. hydrophila. Polyclonal antibodies were raised against membrane and whole cells of three isolates from rainbow trout. Among these, latex particles coated with antibodies raised against whole cells of isolate No. 2 showed the best sensitivity. With latex particles coated with this antibody, we could detect $5{\times}10^4$ CFU of A. hydrophila in 5 min. The cross-reactivity with bacteria constituting the normal intestinal microflora and other pathogens for rainbow trout was insignificant. This latex agglutination assay method produced positive reaction with all clinical isolates of A. hydrophila which were identified by species-specific PCR for 16S rRNA in A. hydrophila.

• Clinical and Experimental Reproductive Medicine
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• v.29 no.3
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• pp.167-178
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• 2002

Objective : The present study was performed to investigate whether apoptosis occur in human embryos by annexin staining and detect the expression of Fas, Fas-ligand (FasL), Bax, and Bcl-2 in human fragmented embryos derived from IVF-ET by immunofluorescence and Western blot analysis. Materials and Methods: Using annexin staining, immunofluorescence and Western blot analysis on normal and fragmented embryos, we were able to detect apoptotsis and apoptotic gene products in fragmented embryos. Result: Phosphatidylserine (PS) translocation, the marker for apoptosis, were detected frequently in fragmented embryos. Bcl-2 and Bax protein were detected in both fragmented and non-fragmented embryos. When fragmented embryos compared to normal embryos, immunofluorescent intensity of Bcl-2 tended to be lower in fragmented embryos. Bax gene expression increased in the fragmented embryos compared to the normal embryos. This result supports a model in which the molar ratio of Bcl-2 to Bax determines whether apoptosis induced or inhibited in human embryo. Fas was highly expressed in human preimplantation embryos but not FasL. It suggests that embryo may undergo apoptosis by binding with FasL produced by follicular or immune cells. Conclusion: The over expression of Bax and Fas will trigger apoptosis to lead embryo fragmentation and change embryo to be nonviable.

• Environmental Analysis Health and Toxicology
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• v.20 no.2 s.49
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• pp.179-186
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• 2005

Particulate materials (PM) less than 10 ${\mu}m$ in diameter are of special interest in air pollution because they are respirable and responsible for the increasing mortality rate of lung cancer and cardiovascular diseases. These particles are often referred to as $PM_{10}$ and they are divided into a coarse fraction and a fine fraction which is also often referred to as $PM_{25}$. In this study, we monitored the TSP, $PM_{10},\;PM_{2.5}$ concentration of ambient air collected in northern part of Seoul in early spring and measured the concentration of heavy metals; Cr, Mn, Zn, As, Cd, and Pb. All the heavy metals were found in the collected particles and the concentrations were variable in the $PM_{10},\;and\;PM_{2.5}$ respectively. The detected concentration ranges were Cr: $ND\~2,889ng/m^3,\;Mn:2.4\~257.9ng/m^3,\;Zn:ND\~353.7ng/m^3,\; As:ND\~22.3ng/m^3,\;Cd:0.1\~2.9ng/m^3,\;and\;Pb:ND\~392.2ng/m^3$ in fine particles. Heavy metal toxicity of the particles were also tested in $H_9C_2$ cell line derived from rat cardiomyocytes. As for the results of health risk assessment calculated by unit risk of IRIS, heavy metals in ambient air of Seoul metropolitan area were found to be responsible for the increase of total excess cancer risk. Among them, chromium (hexavalent) was found to be the most risky in fine particles of ambient air collected in the northern part of Seoul in early spring.