전자교환기의 개발 동향과 향후 전망

이영만,Lee, Yeong-Man 한국전자정보통신산업진흥회 1989 電子振興 Vol.9 No.7

도전성고무의 제조 및 특성에 관한 연구 ( 1 ) - Magnetite 혼합계 도전성고무 -

이영만,윤주호,최세영 ( Young Man Lee,Ju Ho Yun,Sei Young Choi ) 한국고무학회 1995 엘라스토머 및 콤포지트 Vol.30 No.1

To make filler loaded conducting rubber which has the excellent electronical and physical properties, CR and NBR were mixed with magnetite(Fe30,). From the result of the study, vulcanization characteristics shows the upgrading curve as increase in filler concentration and CR has more torque than NBR. When elongation be higher, modulus comes to decreases. Tear strength gradually decrease after showing of the maximum point when is in the 100phr in all. Resilience is not good to cause the increase in filler concentration. In the electrical properties, conductivity becomes smaller when filler concentration is increased. The increase of voltage makes an conductivity grown, but the changed rate is weak. The influence of temperature hardly changes on increasing temperature. The morphology and the distribution for a conductivity filler through SEM were better, the more filler concentration increase, the shorter the particle interval is.

Betamethasone이 일측폐장절제 가토폐장의 압력-용적곡선에 미치는 영향

이영만,이석강,Lee, Young-Man,Lee, Suck-Kang 대한생리학회 1983 대한생리학회지 Vol.17 No.1

steroid가 폐절제에 의한 대상성증식기의 폐장의 압력-용적곡선에 어떤 영양을 미칠 것인가를 알아보기 위해 실시한 본 실험의 결과를 요약하면 폐절제군은 대조군에 비해 폐용압률이 증가하였고 폐절제후 반대측폐장의 무게는 대조군에 비해 폐절제군이 유의하게 증가하였고 폐절제후 betamethasone을 투여한 군에 있어서는 대조군에 비해서는 증가하였으나 폐절제군보다는 적게 증가하였다. 또한 이러한 결과들은 betamethasone에 의해 폐포표면활성물질의 분비가 증가하였거나 혹은 betamethasone이 폐장실질의 결합조직의 단백대사에 영향을 미쳐 elastic recoil force가 감소하여 생긴 결과라고 생각된다. In order to clarify the effect of steroid on the pulmonary pressure-volume curve in the pneumonectomized rabbit, the right side pneumonectomy was performed under general anesthesia with pentobarbital sodium and the remaining lung was excised on the fifth day after surgery. The intrapulmonic pressure in the excised left lung was measured at 20, 25, and 30 ml lung volume during inflation and deflation period. In the steroid treated group, the intrapulmonic pressure at 20, 25, and 30 ml lung volume during inflation was significantly decreased compared with intrapulmonic pressure of the control group. But in the pneumonectomy group the decreasing tendency of the pressure was observed. During deflation, the intrapulmonic pressure at 25 ml and 20 ml was not significantly different from the control group in pneumonectomy and steroid treated pneumonectomy group. And the lung weight was measured in each experimental group and also the lung weightbody weight ratio(L/B) was calculated. The lung weight was significantly increased in both pneumonectomy and steroid treated pneumonectomy group. Calculated L/B was increased significantly in both group. Above results suggest that steroid increases the secretion of pulmonary surfactant or affects the catabolic effect on protein metabolism of connective tissue in lung parenchyma.

시설원예 농업의 경제성과 투자효율 분석

이영만,설인준 ( Young Man Lee & In Joon Seol ) 한국농업경제학회 1996 농업경제연구 Vol.37 No.1

일측폐장절제가 잔류폐, 간 및 신장의 대상성 증식과 혈청전기영동상에 미치는 영향

이영만,이석강,주영은,Lee, Young-Man,Lee, Suck-Kang,Choo, Young-Eun 대한생리학회 1983 대한생리학회지 Vol.17 No.2

In order to clarify the effect of the unilateral pneumonectomy on the compensatory growth of the residual lung, liver and kidney, and serum electrophoresis pattern, right lung pneumonectomy was performed on rabbits under general anesthesia with pentobarbital sodium. On the fifth day after the surgery, the weight of the residual lung, liver and bilateral kidneys was measured and organ weight-body weight ratio was calculated. And in an attempt to know whether the cells in the liver and the kidney were proliferated by unilateral pneumonectomy, DNA content was determined. The quantity(g/100 ml) of serum protein was determined also and serum electrophoresis was performed on cellulose acetate membrane. The results obtained are summarized as following. The weight of the residual lung and lung weight-body weight ratio was significantly increased respectively. The weight of the liver and organ weight-body weight ratio were not changed but the DNA content of the liver and kidney tissue increased significantly, illustrating that unilateral pneumonectomy caused cellular hyperplasia in the liver and in the kidney as well as in the residual lung. The quantity(g/100 ml) of serum protein was significantly increased and in the analysis of the electrophoregram, there was significant difference between the normal and pneumonectomy group. Taken together, these results indicate that unilateral pneumonectomy caused the compensatory hyperplasia of the liver, the kidney and the residual lung as well as the change of electro-phoretic pattern. And it also suggests that a humoral factor, which proliferates the cells in the residual lung, the liver and the kidney, existed in the pneumonectomized rabbits.

인위적 유발 벼멸구 생태형에 있어서 우화율 형질의 유전

이영만,이형래,이부영,최승윤,심재욱,노준창,Lee Young-Man,Lee Hyung-Rae,Yi Bu-Young,Choi Seung-Yoon,Sim Jae-Wook,Ro Choon-Jeohng 한국응용곤충학회 1981 한국식물보호학회지 Vol.20 No.1

벼 품종에 대한 가해능력을 달리하는 벼멸구 생태형의 저항성품종에서의 우화율 유전양상을 분석하고자 실내에서 저항성 품종(Mudgo, ASD 7)을 식이로 이대사육해 인위적으로 유발시킨 유발생태형 2 및 3과 기존생태형 1 사이의 상호 정역교배를 실시하여 $P_1,\;P_2,\;F_l\; F_2,\;BC_1$ 및 $BC_2$의 각세대 $1\~2$령 약충을 공시품종인 Mudgo, ASD 7 $1\~2$엽기 유묘에 접종하여 그 우화율을 조사하였다. 우화율에 대한 유전분석 결과, Mudgo에서의 생태형 2와 생태형 1사이의 조합에서는 생태형 2가 불완전 우성의 단일유전자 ASD 7에서의 생태형 3과 생태형 1 사이의 조합에서는 생태형 3이 불완전열성의 단일 유전자에 의해 우화율이 지배되며, 생태형 2와 생태형 3의 대립관계는 불명확하였다. To analyze the inheritance of emergence rate of brown plant hopper (Nilaparvata lugens) biotypes, six crosses among biotype 1, biotype 2 induced by rearing on Mudgo and biotype 3 these on ASD 7, were made. Each generation $(P_1,\;P_2,\;F_l\; F_2,\;BC_1,\;BC_2)$ of each cross was fed on the rice seedlings of Mudgo and ASD 7 varieties. The emergence rate of biotpe 2 on Mudgo was controlled by the one incomplete dominant gene in $biotype\;l{\times}biotype$ 2 coross, however, that of biotype 3 on ASD 7 was controlled by one incomplete recessive gene in $biotype\;l{\times}biotype$ 3 cross. The genes involved in biotype 2 and biotype 3 were not identical, however, their allelic relations are not clear.

도전성고무의 제조 및 물성에 관한 연구 ( 2 ) - Barium Ferrite 혼합계 도전성 고무 -

이영만,윤주호,최세영 ( Young Man Lee,Ju Ho Yun,Sei Young Choi ) 한국고무학회 1995 엘라스토머 및 콤포지트 Vol.30 No.3

To make filler loaded conducting rubber which has excellent electronical and physical properties, CR and NBR were mixed with barium ferrite(BaO.6Fe2O3). From the result of this study, vulcanization characteristics shows that curve is upgraded as the filler concentration increases and CR has higher torque than NBR. In physical properties, elongation being higher, modulus comes to decrease. Tear strength gradually decrease after showing the maximum point when is in the 100phr in CR. Resilience is not good to cause the increase in filler concentration. In electrical properties, conductivity becomes low when filler concentration increase. The increase of voltage makes a conductivity grown, but the rate change is weak. The influence of temperature hardly changes on increasing temperature. The morphology and the dispersion of a conductivity filler in vulcanizates through SEM were good. The more filler concentration increases, the shorter the particle interval is.

치매노인 부양가족의 스트레스에 관한 현상학적 연구

이영만,신동열,Lee, Young-man,Shin, Dong-yeol 산업진흥원 2020 산업진흥연구 Vol.5 No.2

WIn Korea, the rapid rise of elderly population and dementia prevalence resulting from the unprecedently rapid aging in the world is being emerged as a serious social issue. Caring the elderly with dementia is a different way from a general life and is a world which new cultural existential relationships are interlaced from the relationship viewpoint. From this aspect, the psychological matter of family caring a demented elderly needs to be studied for existential understanding in depth and fundamentally. This study focused on in-depth understanding and description of the stress phenomena experienced by family caregivers with a demented elderly based on Giorgi's method among phenomenological research methods and using existential group counseling techniques. Total 8 sessions of existential group counseling were conducted. This study drew out the outcomes(emotional stress, psychosocial stress, time-dependent stress) of participants' self-awareness experiences by applying 4 steps of Giorgi's phenomenological research methodology based on the Existential Philosophy to participant's intensive statements about stress of family caring a demented elderly drawn out of the existential group counselling sessions. It is hoped that understanding the pain of the supporters who cannot express their own pains through the research results and their self-help group counseling activities will become active, contributing to the health of our society which is about to enter post-aged society.

다중지능의 연계와 확장을 위한 교수전략의 효과

이영만 ( Lee Yeong Man ) 한국초등교육학회 2004 초등교육연구 Vol.17 No.1

Recently, a number of scholars and educators are having a strong concern about Gardner`s theory of Multiple Intelligences and examining the capability of that theory in using as a method for organizing the teaching materials and teaching strategies related to the contents of materials. In this respect, the purpose of this study was to examine the effects of two kinds of teaching strategies using multiple intelligences as the method for organizing a lesson and a learning group. Using elementary students and subject matters, two study group were organized and received a experimental learning material. Experimental group was organized for matching and stretching MI, and took group learning activities on the base of JIGSAW Ⅱ. But comparative group was organized for only matching MI, and learned their tasks on the basis of each students` strong intelligence. The results of this study was as follows; First, According to the result of pretest-posttest analysis of Shearer s Multiple Intelligences Development Assessment Scale(MIDAS), there was significant difference in the level of MI between experimental and comparative groups. Second, like a difference in MI, there was significant difference in the score of Torrance Test of Creative Thinking(TTCT) between experimental and comparative groups. Third, the effects of MI as a teaching method could be more greater when organizing a cooperative learning group on the basis of matching and stretching MI than a simple strong intelligence group considering only the matching MI. Finally, the applying the method of matching and stretching MI simultaneously could be a efficient approach to the development of individual latent competencies and a construction of individualized instruction.

우리나라 쌀 생산농가의 위험관리 분석

이영만 ( Young Man Lee ),이상건 ( Sang Gun Lee ),김성용 ( Sung Yong Kim ) 한국축산경영학회 2007 농업경영.정책연구 Vol.34 No.4