판막 질환에서의 심근 섬유화 : 심근 조직을 이용한 형태학적 연구 및 혈청 생화학적 지표의 분석

강수진,박덕우,송재관,박경민,송종민,강덕현,한기훈,송현,이재원,주석중,송명근,김정선 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

급성 심근허혈에 의해 윤발된 승모판 폐쇄부전의 기전에 관한 실험적 연구

강덕현,송현,송재관,김현숙,이재환,임희영,이재원,박성욱,박승정,송명근 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.8

算數·自然 統合敎科 分析 및 指導硏究

姜錫虞,成濟鉉,徐成輔,朴成澤 부산교육대학교 과학교육연구소 1982 科學敎育硏究 Vol.7 No.-

This study is an analysis and a plan for the improvement on a teaching method, a development of the teaching instruments in integrated subject of mathematics and natural science called "Inquiring Life". Thus this study is summarized as follows: (1) An analysis of the integrated textbook. ① The proportion of the time required for teaching mathematics and natural science is 2:1 in our curriculum. However, in the practical guide book of the Inquiring Life, it has been investigated that the time allotted for mathematics is 12 periods more than the time allotted for natural science, furthermore its significant difference is to appear in x^2=3.86 (p<0.05). ② It has been found that there is a meaning of the integration in the first-term text-book, because the quantity of the contents which is integrated in it is 48.7% of the whole. But there is a problem which must be corrected in the second-term textbook, because such quantity is merely 25.6% of the whole. ③ The time required for teaching a field "figures" was 12 periods (9.2%) of the whole in the textbook of the third revised curriculum (1973). However, since the time required for it in the new textbook is only 2.5 periods (2.0%), this is to show a significant difference in x^2=4.62 (p<0.05). ④ It is because of a emphasis on the problem-solving that the time required for teaching the field "relations" has increased more than that of the preceding textbook. ⑤ There is some resistance in "a reclassification of the shaped boards" and "a learning for preservation of a quantity" to construct a possibility of the learning achievment. ⑥ It is found that the contents and the expressions of the integrated textbook is suitable for our pupils, because, in a questionary investigation for their appropriateness, a significant difference is to appear in x^2=9.49 (p<0.05). (2) The teaching method of the integrated textbook. The integrated teaching method is verified to be effective for a group of the dull pupils by showing a significant difference with CR_M=1.99 (p<0.05). (3) A development of the teaching instruments in the integrated textbook. The integrated teaching instruments that are considered to be a interest of pupils, a acceleration of thoughts, a economic condition, a exactness, a convenience, a firmness and anewness, are efficient for our pupils. (4) An estimation for the integrated textbook. An integration of the curriculum and the revision of the form the pupils' cumulative records are demanded in order to get the good estimations for the integrated concepts.

유치원 급식소의 HACCP 시스템 적용을 위한 미생물학적 위해 분석

강병태 ; 이재우 ; 박동철 ; 윤옥현 김천대학교 2005 김천대학교 논문집 Vol.26 No.-

Foodservice at kindergarten has been provided nation-wide.

중 란탄족 산화물의 결합구조와 전기전도성

강영환,최재시,윤기현 연세대학교 대학원 1980 延世論叢 Vol.16 No.2

The electrical conductivity of highly pure polycrystalline Gd₂O₃, Ho₂O₃ and Yb₂O₃ has been measured from 650 to 1050℃ under oxygen pressure range of 10^(-6) to 10² torr. Plots of logσ vs. T at constant oxygen pressure are found to be linear. and the conductivity dependence of oxygen pressure in the high temperature region (750-1050℃) is approximated by σ α po₂1/5.3. This shows that the conduction mechanism is associated with doubly ionized metal vacancies. Fairly low activation energy and the lack of oxygen pressure dependence are found over the temperature range of 650 to 750℃. The conduction mechanism is explained by not metal vacancies, but hopping oxygen ions in the oxides. The sesquioxides exhibit mixed conduction with some ionic conduction and major electronic conduction carriers.

급성 약물중독 환자의 응급의학적 고찰

강지훈,이현노,진영호,이재백 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.3

Background : Nowadays, acute drug intoxication is a important section of emergency medicine. The purpose of this study was to determine what is the best-way to manage acutely intoxicated patients with drug in emergency department setting. Methods : Clinical assessment were made on 135 cases of drug intoxication visited to emergency center of Hospital during one year from June 1997 to May 1998. Results : 1. The total number of cases of acute drug intoxication was 135 which is 0.5% of total patients presented to emergency center. 2. There was no sexual difference in incidence, but the highest incidence of age group was in 3rd decade(23.7%) and the next was 7th decade(20.0%). 3. High frequency of acute intoxication was observed in autumn. October had the largest portion in monthly distribution. The largest portion of presumed time of poisoning was noon - 4 p. m. and of the time on arrival to emergency center was 8 p. m. - midnight. 4. Suicidal attempt was the most common motive of intoxication (72.6%). 5. The most common drug of intoxication was insecticides (35.7%) and the others were centrally active agents, herbicides in orders. 6. Mental change was observed in 20.7% of patients and the abnormal vital signs were hypertension, tachycardia, and hypotension in order on arrival to emergency center. 7. Mean duration of treatment was 36.1 hours. Mortality rate of the cases was 7.4%. Conclusion : The mortality rate was high in patients who ingested relatively fatal drugs (i.e. herbicides, antimicrovials, insecticides), showed mental change on arrival or received mechanical ventilatory care(p < 0.05).

신경망에 의한 확대 I-PD제어계의 구성

강동원,조재오,이현철,하홍곤,고태언 동의대학교 산업기술개발연구소 2000 産業技術硏究誌 Vol.14 No.-

Many control techniques have been proposed in order to improve the control performance of discrete-time domain control system. In the position control system using a DC servo motor as a driver, the response-characteristic of system is controlled by the I-PD controller. In the I-PD control system, the transient response characteristic is more increased and settling time gets longer if gains of I-PD controller are unsuitable. In this paper, a expanded I-PD control system is constructed by inserting a pre-compensator at output terminal of I-PD controller. it is implemented by neural network with two hidden layers. From the result of computer simulation in the proposed control algorithm, its usefulness is verified.

Clay/Epoxy 하이브리드 나노복합재료의 합성

강재현,유성구,서길수 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.2

In this study, octadecyltrimethylammonium ion was intercalated in the gallery space of layered sodium montmorillonite(MMT) via an ion-exchange reaction. The gallery space was further modified by grafting of the aminopropyl groups via a reaction between a octadecyltrimethyl-ammonium-MMT intercalation compound and 3-aminopropyltriethoxysilane(APS) in order to use as a filler for epoxys-clay hybrid nanocomposites. The interlayer modification of MMT was confirmed by XRD, IR, and 29Si MAS NMR. Furthermore, the resulting hybrid nanocomposites were characterized by XRD, transmission electron microscopy(TEM) and scanning electron microscopy(SEM). The results proved that the organomontmorillonite could be exfoliated into ca. 100Å thickness and uniformly dispersed in the epoxy matrix.

도시지역 한방의료이용자의 질병양상 조사연구

강영우,조태현,김병하,남철현,조남춘,안창수,이재홍 慶山大學校 保健福祉硏究所 1997 保健福祉硏究 Vol.1 No.-

To provide the basic data for improving of curative measures in oriental medicine and for developing of health education and preventive program after understanding of classification of diseases in oriental medicine users, questionnaire interview was carried out with city dwellers, over 20 years old, selected randomly in big cities from 2nd Oct. to 11th Nov. 1995. The results were summarried as follows: 1. In the general characteristics of subjects, the highest portion of each part was 61.2% of female, 25.5% of thirties, 28.5% of high school graduate, 63.3% of middle class and 11.8% of lower class in economic status. 31.9% was housewife, 73.5% was merried and 55.1%, 38.1% came from big or small cities each. 2. By 21 classification of diseases, 19.7% was blood disorders, 17.6% was pregnancy & delivery complications and 15.2% was endorine & nutritional disorders. 3. As for age 22.6% of endocrine & nutritional disorders in twenties, 20.8%, 28.1%, 27.8% of blood & defence mechanism disorders in thirties, forties, sixties each and 24.9% of pregnancy & delivery complications in fifties were the higher than the other groups. 4. By educational level, 47.8%, 30.5% of blood & defence mechanism disorders in uneducated and middle school graduate were the higher than the other groups. 5. As for occupation, 20.8%, 32.9% of blood & defence mechanism disorders in housewives and sales each, were the higher than the other groups. 6. By economic status, 20.2% of blood & defence mechanism disorders in middle and high class, were the higher than the other groups. 7. By marital status, 21.3% of endocrine & nutritional disorders in singles, 22.0%, 25.7% of blood disorders in having partners, were the higher than the other groups. 8. As for living areas, 18.2% of pregnancy & delivery complications in big city dwellers, 21.3% of endocrine & nutritional disorders in town dwellers were the higher than the other groups. The distribution of diseases in oriental medicine users wes very different by chracteristics according the results. So It's important and essential project to improve curative technics and to develop.

엉겅퀴(Cirsium japonicum var. ussuriense KITAMURA)의 조직배양에 의한 식물체의 재분화

강호종,박상현,박기관,김재환 진주산업대학교 1993 論文集 Vol.32 No.-

To examine proper part and medium in in-vitro culture shoot formation of in-vitro Crisium japonicum var. ussurinese KITAMURA, the test was carried out. The results are as follow: The wsa good in differentiation of the plant on the medium was good in MS+BA 10.0+Ki 10.0㎎/ℓ. In the results of formation and roots formation, proper medium was MS+Ki 0.1/ℓ. The case of MS+Ki 0.1㎎/ℓ was much no of shoots, ratio of roots, no of roots, also was good on growth.