• Journal of the Korea Safety Management & Science
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• v.14 no.3
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• pp.85-92
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• 2012

In this study the real situation of apartment house in seoul is reproduced with multi-zone modeling program contam2.4. This model include immune building system(disinfection system) which is consist of dilution, Filter Technology and UVGI(ultra violet germicidal irrdiation). In this study experiments design method used for estimating interaction of HRV air change rate, UVGI air change rate and UVGI grade. Result show that HRV air change rate and UVGI air change rate is most influence factor for remove rate. also Interaction of HRV air change rate and UVGI air change rate is ost influence factor for remove rate.

• Journal of the Korean Chemical Society
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• v.65 no.2
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• pp.145-150
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• 2021

The present study describes a hands-on experiment to help students understand the concept of phase change or phase transition and its application in a phase change material (PCM). PCMs are substances that have the capability of storing and releasing large amounts of thermal energy. They act as energy storage materials that provide an effective way to save energy by reducing the electricity required for heating and cooling. Lauric acid (LA) was selected as an example of the PCM. Students investigated the temperature change of LA and the temperature (of air) inside the test tube. The differences in the temperatures of the systems helped students understand how PCMs work. A one-group pretest and posttest design was implemented with 34 grade-11 students in science and mathematics. Students' understanding was assessed using a multiple-choice test and a questionnaire. The findings revealed that the designed activity helped students understand the concept of phase change and its application to materials for thermal energy storage.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.8 no.1
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• pp.1-11
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• 2005

Purpose: The aim of this study was to evaluate the relationship between H. pylori infection and recurrent abdominal pain (RAP) in children and to evaluate the effects of eradication therapy on RAP. Methods: From January 1998 to January 2005, 166 children with RAP (61 male, 105 female) aged $10.0{\pm}3.3$ years were included. Upper gastrointestinal endoscopies were performed for all the patients. All H. pylori infected children (n=70) received the eradication therapy and were divided into two groups: Group Ia (n=52); eradicated, Group Ib (n=18); non-eradicated. H. pylori-negative children (n=96) were divided into three groups according to the medication: Group IIa (n=67); no medication, Group IIb (n=13); acid-suppressant, Group IIc (n=16); both acid-suppressant and antibiotics. Questionnaire for symptoms were asked at the first, 6th, 12th, 24th, and 36th months following the treatment (grade 0; completely resolved, grade 1; definitely improved, but there are occasional episodes of mild abdominal pain, grade 2; no change in the frequency and intensity of abdominal pain). Results: In about 90% of H. pylori positive children, RAP improved in the both H. pylori-eradicated and non-eradicated children in a follow-up survey. In about 75% of H. pylori-negative children, RAP also improved among in the three groups of patients regardless of medication. Conclusion: These results suggest that there was no correlations between improvement of RAP and eradication of H. pylori, and between improvement of RAP and medication. Consequently the reassurance that the children with RAP have no serious organic cause was important to improvement of RAP.

• Korean Institute of Interior Design Journal
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• v.16 no.5
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• pp.89-97
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• 2007

This study compares, analyzes and reevaluates color conditions and images before and after the execution of the 7th curriculum with elementary schools in Gwang-ju Metropolitan City based on the fact that color among physical environments of elementary classrooms has an important influence on children's emotion and draws problems and aims to accumulate the basic materials for preparing guidelines of improving color environment at general classrooms of elementary schools. Consequently, according to color conditions, major colors on ceiling and wall were high brightness/nigh chroma of Y and YR line regardless of division of grades and other color factors of classroom showed that wall and ceiling used similar colors, but brightness was higher after change than before it. In evaluation of color images, lower grades showed negative color images such as 'common,' 'rustic,' and 'strange' before change, but they showed positive color images after change such as 'clean,' 'unique,' and 'soft'. But, most of higher grades showed negative reactions before change such as 'common,' 'strange,' and 'rustic' and they showed positive reactions after change only in such items as 'clean,' 'warm,' and 'unique', but Indicated negative reactions in remaining items such as 'strange,' 'rustic,' 'stiff,' and 'artificial'. Accordingly, in using colors for lower grade classroom, arrangement of colors through adjustment of brightness and chroma between ceiling, wall and other components based on coloring of high brightness and low chroma of similar colors should be considered and for higher grade classroom, arrangement of colors of unique images of mid-brightness/mid-chroma among warm color lines of similar colors should be examined.

• Journal of Korean Society on Water Environment
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• v.32 no.3
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• pp.281-290
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• 2016

In the northernmost basin of the Bukhan River, pollution sources can have a concentrated distribution. In these basins, small streams show low flow with various and rapid water quality change in low pollutants load. Therefore, a water quality improvement plan of small streams and main stem will be necessary to establish the characteristics of small streams. This study selected a representative Hwacheon-gun in the northernmost basin of the Bukhan River. Hydro analysis was performed with GIS tools using DEM. A total of 152 small streams were listed. A total of 51 survey locations were selected after applying the selection criteria. Flow rate and water qualities were investigated. Pollution sources and pollutants loads were calculated for each basin. Pollution grade and typological classification were performed by cluster analysis using standardized environmental condition factors. As a result, G04, G01, H01 locations were found to have the worst pollution grades whereas J01, P01, and P02 had less pollution. Typological analyses were able to classify six types for the surveyed small streams. An effective water quality improvement plan was obtained based on the results of pollution grade and typological analysis using environmental condition factors of this study.

• Journal of Korean Elementary Science Education
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• v.24 no.3
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• pp.281-291
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• 2005

The purpose of this study was to investigate elementary school pupil's classification ability that appears in classification activity. For this study, we developed 2 suitable tools in classification activity achievement. One is artificial stimulus card that comes into view clearly. The other is natural stimulus card that does not come into view well. The test was administrated to 376 pupils of 2, 4, and 6 grade in D elementary School in Yeongdeungpo-gu, Seoul. The result proved in this study was as following. First, elementary school pupil's classification ability showed the developmental change as the grade level rises. Second, there was no statistical difference between boys and girls. Third, there was high correlation between sort artificial category and natural category in their ability. Fourth, classification achievement rate of constant level by grade was seen regardless of the items. The findings above gives following guidance in science classification learning. First, if teacher understands the development of students' classification ability, more effective classification guidance is available. Second, to cultivate students' classification ability, we should devise and apply program depending on their classification ability by grade.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.33 no.1
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• pp.89-97
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• 2020

Objective : The purpose of this study is to report the effect of Chijageongang-tang on nummular eczema. Methods : We treated a 21-year-old female patient who have nummular eczema by Korean medicine. This treatment was enforced from 19.8.26 to 19.12.30. And we have confirmed the improvement of itching, rashes and oozing. We recorded photos that includes change of symptoms. Results : After the treatments was done, the grade of VAS was decreased. The VAS grade was decreased from grade 6 to grade 0. And we checked DLQI, all questions of index were improved. Conclusion : After administer Chijageongang-tang, the lesions are clearly improved The itchness was decrease. The scabs disappeared and changed into pigment lesions. Thus, It is able that Chijageongang-tang works on skin desease like nummular eczema.

• 대한공업교육학회지
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• v.30 no.2
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• pp.12-22
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• 2005

This study analyzes the requests by the people-in-charge in industries and presents methods to improve field practice systems for technical highschools. Requests from 43 industries in Korea were analyzed. The results about improvement methods for field practices are as follows: First of all, the study suggests the same educational curriculums and number of courses for the 10th grade (National Manditory and Basic Curriculum) and the 11th grade (Elective Program) both in general technical highschools and in "2+1 system" technical highschools. The school offers a dual program: completion and continuation curriculums. In the 12th grade, students choose their careers. Students can participate in field practice as a completion education. In other words, the same curriculums are operated in 10th and 11th grades for students who want to go to college and to get jobs. The different curriculum is arranged for the 12th grade. This system can allow flexibility in curriculum operation for students who want to change their careers or who drop in the middle of filed practice. Students who come back to schools in the middle of field practice are asked to complete technical courses and evaluated like in general technical highschools.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.32 no.4
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• pp.167-175
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• 2019

Objetives : The purpose of this study is to report the effect of Oryeong-san on adult whole-body atopic dermatitis. Methods : We treated a 21-year-old male patient who have adult whole-body atopic dermatitis by Korean medicine. This treatment was enforced from 2019.5.25 to 2019.6.29. And we have confirmed the improvement of itching, rashes and oozing. We recorded photos that includes change of symptoms. Results : After the treatments was done, the grade of VAS and SCORAD was decreased. The VAS grade was decreased from grade 8 to grade 2. The SCORAD score was decreased from 72.1 to 52.1. And itching, rashes, oozing were clearly decreased. Conclusions : Oryeong-san has effect on decreasing itching, rashes and oozing. Also, sleeping time reduced due to itchness was normalized. Thus, It is able that Oryeong-san works on skin desease like atopic dermatitis.

• Journal of Acupuncture Research
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• v.19 no.6
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• pp.35-48
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• 2002

Objective : The study was performed to evaluate the effect of treatment for thoracolumbar compression fracture by using Bee Venom Acupuncture that is well known for anti-inflammatory and analgesic effect. Methods : We investigated 39 cases of patient with thoracolumbar compression fracture. The patients with thoracolumbar compression fracture were treated at the department of acupuncture & moxibustion of Kyung-Won University Oriental Hospital from 1st January 2001 to 30th August 2002. We selected for two groups. One group was treated by Bee Venom Acupuncture therapy(Bee Venom Acupuncture Group : BAG), the other group was treated by Filiform Acupuncture therapy(None Bee Venom Acupuncture Group : NBAG). Results : 1. The distribution showed female predominance in sex and 70's predominance in age. The largest group was "accidental fall" and the next was "lifting heavy objects" in causes, and within 2 weeks in the duration of disease 2. In the duration of admission, the largest group was within 4 weeks. In regard to level of injury, T12 was found to be most predominant, followed in turn by L1, L2, L5. In regard to grade of clinical symptoms, Grade III was most predominant, followed by Grade II, Grade IV. 3. In the results of treatment, 87.5% were above "Good" in BAG and 47.8% in NBAG. 4. In the result of treatment due to the grade of clinical symptoms, BAG was more excellent than NBAG on the whols grade. 5. In the result of treatment due to duration of admission, the duration of admission was not in proportion to the results of treatment. 6. In the change of lumber flexion, the improvement above $80^{\circ}$ was 50% in BAG and 21.7% in NBAG 7. In the stability of treatment, the BAG and NBAG did't show any detrimental change in GOT, GPT, r-GTP, BUN, creatinine. Conclusions : In the treatment of thoracolumbar compression fracture, the Bee Venom Acupuncture can be regarded as more effective treatment than Filiform Acupuncture in the clinical practice. This is expected to be available for clinical use.