• 생약학회지
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• 제39권3호
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• pp.208-212
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• 2008

Seung Ma(升摩) is a famous Chinese crude drug used for treatment of fever, piles and suppurative inflamation. With regard to the botanical origin of Seung Ma, it has been considered to be Cimicifuga spicies of Ranunculaceae, but there has no phrarmacognostical confirmation on it. To clarify the botanical origin of Seung Ma from Korea, the anatomical characteristics of Cimicfuga dahurica, Cimicifuga foetida, Cimicfuga heracleifolia and Cimicifuga simplex were studied. As a result, it was clarified that Seung Ma from Korea was the rhizomes of Cimicifuga dahurica, C, foetida and C, heracleifolia.

• 생약학회지
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• 제25권2호
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• pp.188-193
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• 1994

'Hoo Bak' is one of the Chinese crude drugs used mainly to cure a headache, apoplexy and dyspepsia. With regard to the botanical origin of 'Hoo Bak', it has been considered to be Machilus thunbergii of Lauraceae in Korea. But there has no pharmacognostical confirmation on it. To clarify the botanical origin of 'Hoo Bak', the anatomical characteristics of the bark of Machilus thunbergii, Magnolia officinalis and Magnolia obovata were studied. As a result, it was clarified that 'Hoo Bak' from Korea was the bark of Machilus thunbergii of Lauraceae.

• 생약학회지
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• 제42권1호
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• pp.6-8
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• 2011

'BaegDuOng(白頭翁)' is one of the Chinese crude drugs used mainly as a pruritus, arthritis, cough and abdominal pain. The botanical origin of the crude drug has never been studied pharmacognostically. To clarify the botanical origin of 'BaegDuOng', the morphological and anatomical characteristics of Pulsatilla species growing in Korea, i.e. Pulsatilla koreana Nakai and P. cernua (Thunb.) Spreng. were studied. As a result, BaegDuOng from Korea was proved to be the root of Pulsatilla koreana.

• 천문학회보
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• 제42권1호
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• pp.48.3-48.3
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• 2017

In our recent investigation of the Oosterhoff dichotomy among globular clusters (GCs), we have shown that the RR Lyrae variables in the Oosterhoff groups I, II, and III are produced mostly by first, second, and third generation stars (G1, G2, and G3), respectively. Unlike GCs, RR Lyrae stars in the Local Group dwarf galaxies show Oosterhoff-intermediate characteristics. The origin of this, however, is yet to be understood. In this poster, we will present our progress in understanding the origin of this phenomenon.

• 천문학회보
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• 제43권1호
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• pp.69.2-69.2
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• 2018

On 2018 March 27, a 1-m telescope was installed at the SNU Astronomical Observatory (SAO) which is a newly constructed building at the site where the previous Kwanak Observatory (Old observatory; 구천문대) stood. A series of test observations have been performed on this telescope, and we report the first results from the test observations in this poster. In particular, we present seeing values, limiting magnitudes and sample images taken with a $4k{\times}4k$ CCD camera ($21^{\prime}{\times}21^{\prime}$).

• 생약학회지
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• 제30권3호
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• pp.320-327
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• 1999

'Gu Maig(瞿麥)' is one of the Chinese crude drugs used mainly to cure a diuretic, gonorhoea and menostasis, etc. With regard to the botanical origin of 'Gu Maig', it has been considered to be Dianthus spp. of Caryophyllaceae, but there has not been studied pharmacognostically. To clarify the botanical origin of the "Gu Maig", the morphological and anatomical characteristics of the leaves and stems of Dianthus species growing in Korea, i.e. D. sinensis, D. superbus var. longicalycinus, D. repens, D. morii, D. superbus var. speciosus were compared. As a result, it was determined that 'Gu Maig' was the whole plant body of Dianthus sinensis and D. superbus var. longicalycinus.

• 생약학회지
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• 제37권1호통권144호
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• pp.1-10
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• 2006

'O Ga Pi Ip' has been used in Korea to cure rheumatism, neuralgia, edema, dematopathy, and impotence. The botanical origin of the crude drug has not been confirmed pharmacognostically. To clarify the botanical origin of 'O Ga Pi Ip', the morphological and anatomical characteristics of the leaves of Acanthopanax species growing in Korea and Japan, A. chi-isanensis Nakai, A. Koreanum Nakai, A. rufinerve Nakai, A. senticosus (Rupr.et Maxim). Harms, A senticosus (Rupr.et Maxim.) for inermis Harms, A. seoulense Nakai, A sessiliflorus (Rupr. et Maxim.) Seem, A. divaricatus Seem, A. sieboldianum Makino were compared. As a result, it was determined that 'O Ga Pi Ip' was the leaf of A. sessiliflorus (Rupr. et Maxim.) Seem, A chiisanensis Nakai, and A. koreanum $Nakai_I$.

• 생약학회지
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• 제42권2호
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• pp.107-109
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• 2011

'BaegMi(白薇)' is one of the Chinese crude drugs used mainly as an antipyretic and diuretic. The botanical origin of the crude drug has never been studied pharmacognostically. To clarify the botanical origin of BaegMi, the morphological and anatomical characteristics of Cynanchum species growing in Korea were studied. As a result, BaegMi was proved to be the root of Cynanchum atratum and Cynanchum ascyrifolium.

• 생약학회지
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• 제40권2호
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• pp.99-102
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• 2009

'Whang Baig(黃柏)' is one of the crude drugs used mainly as a removing dampness, purging fire, detoxicating, and cleaning away heat of deficiency type. The botanical origin of the crude drug has never been studied pharmacognostically in Korea. To clarify the botanical origin of Whang Baig, the anatomical characteristics of Phellodendron amurense Rupr., Phellodendron insulare Nakai and Phellodendron molle Nakai were studied. As a result, it was clarified that Whang Baig from Korea was the bark of Phellodendron amurense and Phellodendron molle.

• 정보과학회지
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• 제5권1호
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• pp.62-78
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• 1987

인체의 신경조직에서 정보를 전달하기 위해서 발생하는 Signal인 spontaneous firing의 origin을 조사하기 위해서 Hodgkin-Huxley의 수학적 모델을 기초로 하여 Simulation을 하였다. 그 모델의 Parameter인 Stimulus current를 zero로 함으로써 생리학적으로는 stimulus없이 어떤 특정한 근육근 등에서 발생되는 spontaneous firing의 경우가 되었고 또한 physical meaning들을 포함하고 있는 parameter들의 상호 독립적 상태를 초래하여 그 firing의 origin을 연구할수 있게 되었다. 이 simulation을 통하여 얻어진 수확들은 origin에 대한 조사 연구뿐만 아니라 많은 새로운 사실의 발견에도 존재한다. 그 예로서는 이 simulation이 stimulus 없이 spontaneous firing을 얻은 최초가 되며 이 분야에 명성있는 학자들이 simulation을 통해서는 매우 제한된 수의 firing만을 얻을수 있다고 단언했으나 그 반증이 여기에서 입증되었고 leakage conductance의 중요성을 예측하게 한다. 특히 leakage potential이 firing의 수를 조정할수 있다는 것은 특이한 발견이다.