• Journal of Acupuncture Research
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• v.20 no.5
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• pp.133-150
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• 2003

Objective: Recently. many studies have showed the evidences of the effect of the Electro-acupuncture treatment through scientific. Methods : One of these methods is functional MRI. We performed electro-acupuncture on Zusanli(St36) and observed the change of brain activation using fMRI. Zusanli(St36) is located on the lateral side of the lower leg. 3 cun(寸) inferior to the Patella of the lower border. Theoretically and clinically. this point has been considered very important for gynecological disorders. spleen and stomach disorders. and psychological disorders. To see the effects of electro-acupuncture stimulation on Zusanli(St36). the experiment was carried out on twelve healthy volunteers. using the gradient echo sequence with the 3.0T whole-body fMRI system(ISOL). After the needle insertion on right Zusanli(St36). 2 Hz of electric stimulation was given for 30 seconds. repeated five times. with 30 seconds' intervals. The Image analysis including motion correction. talairach transformation, and smoothing was done with SPM99. Results ad conclusion : The electro-acupuncture stimulation on Zusanli(St36) activates Brodmann Area 6, 13, 2, 19, 21, 22, 39, 40, 38, 3which indicates the pathways of the electro-acupuncture stimulation on Zusanli(St36) and the possibility of the relationship of the electro-acupuncture stimulation on Zusanli(St36) with autonomic nervous system, internal organic system.

• Journal of the Korean Society of School Health
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• v.10 no.1
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• pp.65-74
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• 1997

Health can be maintained and promoted by pursuing a healthy lifestyle. A healthy lifestyle implies keeping healthy habits such as regular exercise, a balanced diet, weight control, and stress management etc. The objectives of this study are: (1) To find out patterns in the lifestyle and health status of high school students. (2) To analyze the factors that affect a healthy lifestyle. (3) To compare the level of understanding of a healthy lifestyle and its practice between male students and female students. The study population wag 388 high school students. The data was analysed through a % total, a $X^2$ test, and a multiple classification analysis. The lifestyle assessment questionnaire was devided into ten sections. The results are as follows; (1) There was a positive correlation between health status and a healthy lifestyle. (2) There existed strong positive correlations between independent variables (age, group) and dependent variable (nutritional practices, physical activity, stress management, serve of purpose). (3) The level of understanding of a healthy lifestyle was not high for most of the students. Female students showed a higher understanding than male students in nutrition practice, while male students group showed a higher and under standing than female students for physical activity. The other result were similar in their practice of a healthy lifestyle. With all these above considerations, the level of understanding and practice of a healthy lifestyle in students was not higher than the adult group. Students should have more educational opportunities and take a more systematic education in practicing a healthy lifestyle.

• Progress in Medical Physics
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• v.19 no.4
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• pp.305-312
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• 2008

The aim of this study is to introduce the accuracy of Ir-192 source's apparent activity using the well-type chamber and the Farmer-type ionization chamber in the high dose rate brachytherapy. We measured the apparent activity of Ir-192 that each medical center in the country has and the apparent activity of calibration certificate provided by manufacturer is compared with that by our experimental measurement. The number of sources used for the activity comparison was 5. The accuracy of the measured activity was in the range of -2.8% to -1.0% and -2.1% to 0.2% for the Farmer-type chamber system (Jig) and for the well-type, respectively. The maximum difference was within 1.0% for comparison with two calibration's tool. Our results demonstrate that well-type chamber as wall as Farmer-type chamber is a appropriate system as the routine source calibration procedures in HDR brachytherapy. Whenever a new source is installed to use in clinics, by periods, a source calibration should be carried out.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.3
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• pp.1458-1464
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• 2014

The purpose of this study were to identify the effect of thesis-writing activity based project method on the ability of girl's middle school student's self directed learning(SDL) and learning attitude. To achieve above study purpose, the subject of this study were selected 60 from second-grade students of reading club(thesis-writing activities participants 30, non-participants 30), applied a program based project method to experimental group, to carry out a pre-post examined targeting two-group with early making a SDL ability and learning attitude inventory, and the results of the data were analyzed by t-test using the SPSS(Ver. 18). The results were as follows: In the aspect of SDL ability development by thesis-writing activity, the student participant showed somewhat significant differences compared to the non-participants. First, a openess, inner-motivation, autonomy, self-conception of SDL ability was significantly higher than those non-participants. Second, confidence, success expert, attention, effectiveness, affection of learning attitude was significantly higher than those non-participants. These results represent that various programs, which can develop SDL ability and learning attitude, can be provided for youth when they join any thesis-writing activity based project method in general and those programs are also very effective in developing SDL ability and learning attitude of juveniles. Furthermore, It is suggested that thesis-writing activity based project method are a necessary element at the school education fields.

• Proceedings of the Korean Society of Medical Physics Conference
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• 2002.09a
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• pp.275-278
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• 2002

The recognition of the natural background radiation is important not only for radiological education but also for the promotion of people's scientific view about radiation. We made a "room" on the web showing natural background radiation as part of a VRM (Virtual Radiation Museum). The "room" shows the video images of the tracks of charged particles from natural background radiation, alpha and beta ray track from known sources using a Large Scale Diffusion Cloud Chamber. The purpose of this study is to make clear the origin of a kind of track (named A-track) which is thick and easy to recognize with the length less than several cm in the cloud chamber, and to make numerical explanation of its counting rate. The study was carried out using a Large Scale Diffusion Cloud Chamber (Phywe, Germany) installed in the Niigata Science Museum. The Model RNC (Pylon Electronics, Canada) was used as Rn-222 source. Ra-226 activity in RNC was 111.6 Bq calibrated with NIST protocol. Rn-222 gas was injected into the cloud chamber. Continuous video recording with use of Digital Handycam (SONY, Japan) was carried out for 360 min. after injection of Rn-222 gas. The number of alpha-ray track (alpha track) in the video images was analyzed. The growth and decay curve of the total activity of Rn-222 and its alpha emitting progeny were calculated and compared with the count of the alpha tracks. As a result the alpha tracks formed by Rn-222 injection resemble A-Tracks. The relationship between A-track in the cloud chamber and atmospheric Rn is discussed.

• Fisheries and Aquatic Sciences
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• v.25 no.2
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• pp.49-63
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• 2022

Anti-cholinesterase (ChE)s are commonly prescribed as the symptomatic treatment of Alzheimer's disease. They are applied to prevent the breakdown of neurotransmitter acetylcholine (ACh) that bind to muscarinic and nicotinic receptors in the synaptic cleft. Seaweeds are one of the richest sources of bioactive compounds for both nutraceuticals and pharmacognosy applications. This study aimed to determine the anti-ChEs activity of Gracilaria manilaensis, one of the red seaweeds notables for its economic importance as food and raw materials for agar production. Methanol extracts (GMM) of G. manilaensis were prepared through maceration, and further purified with column chromatography into a semi-pure fraction. Ellman assay was carried out to determine the anti-acetylcholinesterase (AChE) and anti-butyrylcholinesterase (BuChE) activities of extracts and fractions. Lineweaver-Burk plot analysis was carried out to determine the inhibition kinetic of potent extract and fraction. Major compound(s) from the most potent fraction was determined by liquid chromatography-mass spectrometry (LCMS). GMM and fraction G (GMMG) showed significant inhibitory activity AChE with EC₅₀ of 2.6 mg/mL and 2.3 mg/mL respectively. GMM and GMMG exhibit mixed-inhibition and uncompetitive inhibition respectively against AChE. GMMG possesses neuroprotective compounds such as cynerine A, graveolinine, militarinone A, eplerenone and curumenol. These findings showed a promising insight of G. manilaensis to be served as a nutraceutical for neuronal health care in the future.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.811-820
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• 2013

This study aimed at analyzing the effects of economic and leisure activities and social supports on the life satisfaction level of the olders who live in the Seoul city and surroundings and finding out the differences in the variables such as the economic and leisure activities, social support and life satisfaction level according to the demographics variables of the older. And the results are as follows. First, the education level, the status of living with spouse, status of economic and health conditions have positive influences of life satisfaction lever of the older. But the participation duration and frequencies of the economic and leisure activities do not affect on the life satisfaction level of the older. Second, the social support has an influence on the life satisfaction level of the older. Third, the differences in the variables such as social participation social support and life satisfaction lever of the older according to the demographic variables were found out partially.

• Journal of Nutrition and Health
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• v.14 no.2
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• pp.71-79
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• 1981

The purpose of this paper is to find out whether Du-chung tea and Du-chung tea added with Stevia leaves are suitable for everyday use of diabetics. For this purpose, states of diabetic rabbit, induced by giving alloxan to normal rabbit, were examined in two cases. One was to administer Du-chung tea sweetened by sugar to the above same animal and the other to apply Du-chung tea sweetened by Stevia leaves, instead of sugar, under the equal condition. A study was carried out to determine the effects on blood sugar level, contents of BUN (blood urea nitrogen) and total cholesterol, and GPT (glutamic pyruvate transaminase) activity in both groups. The following results were obtained. 1) Sweetness of Du-chung tea added with 0.3-0.5% Stevia leaves was never to the standard sweetness. 2) Sweetness of Du-chung tea with 2% sugar plus 0.2% Stevia leaves was the nearest to the standard sweetness. 3) Du-chung tea with 0.5% Stevia leaves was recognized as the most effective the next was Du-chung tea no sweetening, and the worst was Du-chung tea with sugar. Addition of 0.2% Stevia leaves without lessening sugar concentration of the above Du-chung tea showed the same result as Du-chung tea with sugar. 4) Du-chung tea with Stevia leaves and Du-chung tea without sweetening had the tendency of reducing the total cholesterol content in serum, while only Du-chung tea with Stevia leaves presented remarked difference after 4, 6 and 10 days, when they were compared with control group. 5) Degree of CPT, activity had in general the similar tendency- to that of total cholesterol content. 6) Taken Du-chung tea with Stevia leaves and Du-chung tea without sweetening, the BUN content showed reducing tendency in small quanity, but, having little defference from control group.

• Journal of the Korean School Mathematics Society
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• v.18 no.1
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• pp.39-60
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• 2015

It is one of the fundamental issues that students in teaching and learning process should take a proactive role in school mathematics. Inquiry or discovery learning in school mathematics is the specific method for students to participate in lessons on their own initiative, which is supported by many scholars in mathematics education. In this paper, we investigate pre-service teachers' perspectives of Inquiry or discovery learning by intensively analyzing information and guided orientation in teaching practice. From this, we find the direction of the pre-service teacher training program for carrying out pre-service teachers' role to help students to take a proactive role in school mathematics.

• Journal of Environmental Science International
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• v.19 no.1
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• pp.69-80
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• 2010

Today's fundamental purpose of environmental education is to fulfill people's desire of living in a pleasant environment and at the same time promoting individualistic and collective environmentally friendly behaviors. In order to achieve these purposes, it is very important that each person holds an environmentally friendly mind that constantly tries to preserve and protect the environment which should be acquired through experiencing the importance of the environment. In order to increases the sense of attachment of people and the natural environment, the direction of environmental education should carry out education on environment related knowledge and the condition of environment damage side by side. The direction of environmental education should consider the cultivating student's awareness for active participation on matters related to the environment and to change their behaviors towards the environment. This study has tested the effect of reflective writing activities about the environment on the environmental sensitivity and willingness to act of 5th grade primary school students. For the sole purpose of this study, 70 students out of 141 5th graders of M Primary School were divided as the experimental group, and another 71 students were divided as the control group. The experimental group participated in 10 activities in where they were asked to express their thoughts and feelings in writing regarding 10 environmental problems occurring near the M Primary School. The control group participated in 10 environmental education lectures focusing on the lecturer. The results were as following. First, the reflective writing activities about the environment were effective in the environmental sensitivity of primary school students. Second, the reflective writing activities about the environment can affect the environmental willingness to act of primary school students. Third, there was a statistically significant correlation between environmental sensitivity and environmental willingness to act.