• 제목/요약/키워드: Jong-Hwa AN

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안종화(安鍾和)의 <수학절요(數學節要)>에 대한 고찰 (A study on An abridged version of the Joseon Mathematics (Su-Hak-Jeol-Yo), a mathematics book written by Jong-Hwa AN)

  • 이상구;이재화;변형우
    • 한국수학교육학회지시리즈E:수학교육논문집
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    • 제25권4호
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    • pp.641-651
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    • 2011
  • 한말 국학자이며 애국계몽운동가인 안종화(安鍾和, 1860. 11. 9-1924. 11. 24, 본관은 경주(廣州)-경능(廣陵), 호(號)는 함재(涵齋), 자(字)는 사응(士應))는 조선의 마지막 과거인 1894년 식년 문과에서 이상설(李相卨, 1870-1917)과 같이 합격하였으며, 두 분 모두 수학책을 저술하였다. 대만의 수학사학자인 홍만생(洪萬生)은 규장각의 조선 산서를 비교 검토하던 중 안종화의 <수학정경절요괄집(數學正徑節要括集), 약칭(略稱) 수학절요(數學節要)>을 처음 발견하고, 이 책의 잠재적 가치에 대하여 크게 평가하였다. 본 연구에서는 안종화가 1882년에 저술한 현재까지 발굴된 조선의 마지막 전통수학책인 <수학절요>에 대하여 최초로 소개한다. <수학절요>의 목록을 살펴보면 이 책이 기본적으로 <구장산술(九章算術)>의 내용을 중심으로 다루고 있으며, <산학정의(算學正義)>와 <수리정온(數理精蘊)>의 영향을 많이 받았음을 알 수 있는데, 특히 승법은 포지금(鋪地錦)이라 불리는 방법으로 계산되어 있다.

실험계획법을 이용한 복합 폴리프로필렌의 최적화 연구 (A Study of the Optimization of the Compounded PP Using the DOE)

  • 박성호;임동철;김기성;배종락;전오환
    • 한국자동차공학회논문집
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    • 제18권1호
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    • pp.74-85
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    • 2010
  • In order to formulate the compounded polypropylene(C-PP) which is suitable to an automotive door trim panel, 9 sorts of properties were measured after manufacturing the C-PP using an extruder and an injection machine with polypropylene(PP), ethylene-octene rubber(EOR) and talc. Mixture design, especially extreme vertices design, in DOE with MINITAB - commercial software was used to analyze the data. The relations between each property and each component, for example, $y=0.00907222x_1+0.00870556x_2+0.0155722x_3$ for specific gravity, were found out by the regression analysis and the variance analysis. The optimized formulation of the C-PP for an automotive door trim panel was acquired at PP(77.6962), EOR(11.0238) and talc(10.2800) by use of the response optimizer(mixture) in MINITAB.

기질 및 성격검사(TCI)에 나타난 한방신경정신과 환자의 전반적 특성 및 화병 환자의 특성 (Personality Profiles of Patients Who Visit Oriental Neuropsychiatric Clinic : Analysis of Temperament and Character Inventory(TCI))

  • 김상영;송승연;정선용;김종우
    • 동의신경정신과학회지
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    • 제23권4호
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    • pp.107-122
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    • 2012
  • Objectives : The purpose of this study is to examine the general personality profiles of patients who visited an oriental neuropsychiatric clinic and to investigate the specific profiles of patients diagnosed with Hwa-byung. Methods : We analyzed the profiles of 122 patients who completed TCI-RS questionnaire for the purpose of counseling. Patients were divided by sex, age and diagnosis related groups. Scales and subscales of each group were compared by an independent t-test and ANCOVA with SPSS windows 16.0. Types of temperament and character were classified by percentile ranks of the total patients and diagnosis related groups. Results : 1. Total patients were classified as the high harm avoidance type of temperament and of low self-directedness type of character. 2. Male patients showed significantly higher scores on NS, all subscales of NS, P2 and P3 than female patients. HA4 and C5 scores were significantly higher in the female group. Younger patients showed significantly higher scores on NS, all subscales of NS, HA1 and P3. However, older patients had significantly higher scores on SD4, SD5, ST2 and ST3. 3. Between diagnosis related groups, Hwa-byung group had significantly higher scores on RD, ST, SD3 and ST2. However P3 score of non-hwa-byung patients was higher than hwa-byung patients. In typical classification, both hwa-byung and non-hwa-byung groups were classified as the same types as total patients. Conclusions : This study showed that the patients visited an oriental neuropsychiatric clinic and had similar personality with that of general psychiatric disorders. Hwa-byung patients exhibited higher RD and ST scores than other disorders, but they had no typical differences.

실란 가교 반응을 이용한 폴리프로필렌의 충격강도 향상에 관한 연구 (A Study on Silane Crosslinking Process of Polypropylene for Enhanced Impact Strength)

  • 강민수;박성호;김기성;배종락;전오환
    • 한국자동차공학회논문집
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    • 제18권3호
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    • pp.69-73
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    • 2010
  • The melt grafting of unsaturated silanes onto polypropylene (PP) in a twin-screw extruder and crosslinking in hot water were studied to enhance impact strength of polypropylene. The influence of grafting formulations on the melt flow rates of grafted PP and the gel percentages of crosslinked PP was investigated. 3-methacryloylpropyltrimethoxysilane (VMMS) unsaturated silane monomer was used. Benzoyl peroxide, (BPO) and Dicumyl peroxide (DCP) were used as an initiator. When benzoyl peroxide (BPO) was used as an initiator, higher gel percentage and impact strength than those of DCP has been observed. The maximum impact strength was obtained with 0.7 phr of BPO and 2phr of VMMS. The value is 8.7 kgf-cm/cm and it is on a parity with the value of with 20 phr of EOR mixed to PP.

Comparisons of thermogenic activity among Ginseng Radix Alba (GRA), Ginseng Radix Rubra (GRR), and Panax Quinquefolii Radix (PQR)

  • Kang, Kwi-Man;Yoon, Se-Na;Bae, Soo-Young;Lee, Dong-Eok;Sung, Jong-Whan;Chung, Sung-Hyun
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.262.1-262.1
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    • 2002
  • Uncoupling proteins (UCPs) are transmembrane proton transporters present in the mitochondria. In UCPs. UCP1 and UCP3 play an important role in adaptive thermogenesis by uncoupling mitochondrial oxidation of substrates from ATP synthesis. PPARg coactivator 1(PGC-1) regulates transcriptional activity of PPARg and other nuclear receptors and controls the expression of UCPs. (omitted)

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The properties of ginseng saponins metabolizing intestinal bacteria

  • Choo, Min-Kyung;Lee, Mi-Ji;Sung, Jong-Hwan;Park, Sung-Hwan;Kim, Dong-Hyun
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.334.3-334.3
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    • 2002
  • Ginseng(the root of Panax ginseng C.A. Meyer, Araliaceae) has been used for thousands of years as a traditional medicine in Asian countries. The main components of Ginseng are ginsenoside Rb1, Rb2 and Rc. These compounds are transformed by intestinal microflora. The main metabolite of ginsenosides was compoud K (IH-901). The transformed compound K shows an antimetastic or anticarcinogenic effect by blocking tumor invasion or preventing chromosomal aberration and tumorigenesis. Therefore. we isolated and characterzed ginseng saponin-metabolizing bacteria from human intestinal microffora. Among 200 tested intestinal bacteria. we found 78 bacteris to transform glnseng senseng saponins to compound K. These bacteria were seperated into three group: the first group highy produced ginsenside Rd (29) the second grop produced potently ginsenoside F2 (21) and the third produced compound K(28)

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화병환자를 대상으로 한 음악청취 중재의 효과에 대한 연구 (Effectiveness of Music-listening intervention on Hwa-byung Patients)

  • 박소정;정선용;황의완;김종우
    • 동의신경정신과학회지
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    • 제18권3호
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    • pp.23-41
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    • 2007
  • Objective: The objectives of this preliminary study was to develop cost-effective and accessible self-intervention program and to assess the effects of music listening self intervention program for Hwa-byung patients, who had undergone conflicts with family and economical problems, in quantity and quality. Subjects: Seven middle age women who bad been diagnosed with Hwa-byung by Hwa-Byung Diagnotic interview Schedule participated in this program. Method: Participants learned music listening techniques and visited hospital three times a week during 2 weeks. Music-listening self intervention for Hwa-byung patients was consisted of three sad musics(in minor) and three sedative musics(in major) and perlO1med at home for 2 weeks. Patient's somatic symptoms and self awareness (of Hwa-byung scale), anxiety(STAD, anger(STAXD, depressive mood(BDD were evaluated before and after intervention and 6 weeks later after study completed. And various and subjective responses of Music-listening self intervention for Hwa-byung patients were collected by semi- structured interview made for this study. Results: Their Somatic symptoms(especially insomnia), self-awareness of Hwa-byung and depressive mood were improved except anxiety, anger. This improvement had maintained over a 6-week follow-up period. Patients had used constantly the music-listening program for Hwa-byung patients after the study completed. Conclusion: The music-listening program will be an effective for Hwa-byung patient's somatic symptoms and depressive mood and had been used constantly by them. But, much methodological supplementation will be needed to assess clinical effects on this program.

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Effect of Sihogayonggolmoryeo-Tang on Hwa-byung: A Multicenter, Randomized, Double-Blinded, Placebo-Control Trial

  • Choi, Woo-Chang;Lee, Hun-Soo;Kim, Ju-Yeon;Kang, Wee-Chang;Park, Yang-Chun;Kim, Geun-Woo;Kim, Jong-Woo;Jung, In Chul
    • 동의신경정신과학회지
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    • 제31권3호
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    • pp.135-147
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    • 2020
  • Objectives: Hwa-byung is a mental illness. It is also known as a Korean culture-related syndrome. In traditional Korean medicine, Sihogayonggolmoryeo-tang is used to treat Hwa-byung related neuropsychiatric symptoms. The purpose of this research was to examine the effect of Sihogayonggolmoryeo-tang on Hwa-byung. Methods: A multicenter, randomized, double-blinded, placebo-controlled study was performed for 160 patients with Hwa-byung. Patients were divided into a Sihogayonggolmoryeo-tang group and a placebo group. Treatment period was 8 weeks. Hamilton Rating Scale for Anxiety (HAM-A), Likert scale for major symptoms of Hwa-byung, Hwa-byung Scale (HBS), Korean Beck Depression Inventory (K-BDI), Korean State-Trait Anxiety Inventory (K-STAI), Korean State-Trait Anger Expression Inventory (K-STAXI), and Korean WHO Quality of Life Scale Abbreviated Version (WHOQOL-BREF) were used to evaluate the effect of Sihogayonggolmoryeo-tang on Hwa-byung. We also used an Instrument of Pattern Identification for Hwa-Byung to evaluate different responses for six patterns of patients. Results: Scores of all the measurements improved significantly for each group, showing no significant differences between the two groups. In the case of deficiency of both Qi and blood pattern, the Sihogayonggolmoryeo-tang group showed a significant decrease in the HAM-A score compared to the placebo group. Conclusions: The effect of Sihogayonggolmoryeo-tang on Hwa-byung did not exceed that of the placebo. Further studies involving more elaborate pattern identification are needed.