• 한국동물학회지
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• 제36권2호
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• pp.223-230
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• 1993

Three species of oxvtrichid hypotrichs collected from the Han River on Sune 6, and August 26, 1992 have been cultured at laboratory. Thev were identified as Oxvtricha hvmenostoma Stokes, .1887, 0. hoemutoplasma Blatterer and Foissner, 1990 and Tochvsomu pellionellum (Muller, 1773). These species are reported for the first time from Korea. Morphological and biometrical studies were carried out by observing both wild and cultured cells and the infraciliature of silver stained specimens. The present species were redescribed and analvzed biometricallv.

• The Korean Journal of Ecology
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• 제7권3호
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• pp.119-131
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• 1983

The cluster analysis on the distribution of epiphytic lichens on the north, south, east and west slope of Mt. Hanra was carried out by three methods, sum of square algorithm (SSA), prinicipal component analysis (PCA) and multidimensional scaling method(MDS). Analysis of concentration (AOC) was used for the comparison between the lichen communities of north and south slope. The lichen species was identified 35 species by Hale and Culberson technique. The classification of sites by SSA method was divided into two areas in four slopes, and that of species by SSA, PCA and MDS methods was classified into three clusters in east slope, four clusters in south and west slope, and there clusters in north slope. The comparison between north and south slope of the distribution of lichens indicates that loight elevation of north slope (NH; 1600m~1900m) was similar to that of relative low elevation of south slope (SL; 1000m~1300m). The genus lichen, Anaptychia, Parmelia, Lobaria and peltigera was found as the dominant genus in both slopes.

• 생약학회지
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• 제19권2호
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• pp.120-126
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• 1988

HPLC analysis of three Prunus species, Armeniacae Semen. Persicae Semen, and Mume Semen, showed that 24. 06 mg/g, 5. 79 mg/g and 3/ 10 mg/g of amygdalin in the MeOH extract and 3. 59 mg/g, 5. 41 mg/g and 13. 48 mg/g of benzaldehyde in the MeOH extract hydrolyzed with ${\beta}-glucosidase$ were contained respectively. The MeOH extract of Mume Semen showed strong antibacterial activities against two species of bacteria (E. coli and B. subtilis) while that of Armeniacae Semen showed mild, and that of Persicae Semen showed no effect. Against A. niger, a strong antifungal activity was observed with Armeniacae Semen and only mild activities with Persicae Semen and Mume Semen. None oh the three inhibited the growth of S. cervisiae. The above results may possibly be suggestive of the correlationships between the contents of amygdalin and benzaldehyde in the test extracts with the antimicrobial potencies.

• 펄프종이기술
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• 제42권3호
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• pp.14-21
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• 2010

Three different species of cattails (Typha orientalis, Typha angustata, Typha latifolia) cultivated in South Korea were examined as raw materials for the production of pulp and paper. Soda pulping with anthraquinone was used for the stems and the leaves of cattail, separately. Addition of anthraquinone in soda pulping improved the yield greatly. Chemical components between three cattail species and within each species (leaves and stem) gave little differences. Average fiber length of the bleached cattail fibers was a little shorter than that of the HwBKP of Eucalyptus. Average fiber width of the cattail fibers was a half of that of the HwBKP. Compared to the HwBKP, cattail pulp gave higher breaking length, higher opacity, and better smoothness at equivalent freeness.

• 대한수학회논문집
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• 제21권4호
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• pp.701-717
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• 2006

The positive coexistence of a simple food chain model with ratio-dependent functional response and cross-diffusion is discussed. Especially, when a cross-diffusion is small enough, the existence of positive solutions of the system concerned can be expected. The extinction conditions for all three interacting species and for one or two of three species are studied. Moreover, when a cross-diffusion is sufficiently large, the extinction of prey species with cross-diffusion interaction to predator occurs. The method employed is the comparison argument for elliptic problem and fixed point theory in a positive cone on a Banach space.

• 한국균학회지
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• 제26권2호통권85호
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• pp.200-210
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• 1998

1982년부터 1996년까지 우리나라 전역에 걸쳐 원주 치악산 등 총 25곳으로부터 채집하여 농촌진흥청 농업과학기술원 생물자원부 표본실 및 순천향대학교 자연과학대학 생물학과 표본실에 보관중인 귀신그물버섯류 45개 표본과 연지그물버섯류 7개 표본을 확보하였고 Moser(1983) 및 Singer(1986)와 Hongo(1987)의 분류체계에 준하여 분류 동정한 결과 귀신그물버섯속은 털귀신그물버섯(Strobito-myces confusus Singer)과 귀신그물버섯[Strobilomyces floccopus(Vahl ex Fries) Karsten]의 2종, 연지그물버섯속은 연지그물버섯(Heimiella japonica Hongo)의 1종으로 확인되었다. 색명은 'Methuen Handbook of Colour' (Kornerup & Wanscher; 1983)를 인용하였다.

• 한국응용곤충학회지
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• 제37권1호
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• pp.9-17
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• 1998

지금까지 한국에서는 바늘선충아과에 Longidorus sylphus 1종만 알려졌으나 금번 한국산 창선충목의 계통분류학적 연구중, L. litchii, L. himalayensis, Paralongidorus sali 등 3종의 바늘선충이 새로이 발견되어 그 형태적 특징을 기술 도시하였다.

• Journal of the Korean Data and Information Science Society
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• 제20권1호
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• pp.211-217
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• 2009

In this paper, we are studying the property for permanence of a three species food chain system with impulsive perturbations and Holling type II functional response, species which is important concept or property in ecological systems. Specially, we give the conditions for the permanence of this system. To do it, we consider the comparison method which is typical skill happened in impulsive differential inequalities. In addition, we reaffirm our results by using a numerical example.

• 한국응용곤충학회지
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• 제47권1호
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• pp.5-8
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• 2008

본 연구를 통해 밤나방과의 Anorthoa angustipennis (Matsumura), Harutaeographa stenoptera (Staudinger), Cerastis pallescens (Butler) 등 3종은 중국에서 처음으로 보고되며 Nikara castanea (Moore)는 처음으로 중국 동북지역에서 보고된다 새로이 보고되는 중국 미기록 3종과 동북지역 미기록 1종 성충을 대상으로 외부형태적 특징과 암수생식기 또는 분포를 간략한 기술과 함께 도해하였다.

• 한국응용곤충학회지
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• 제51권3호
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• pp.231-234
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• 2012

Meganola속 3종 M. bryophilalis (Staudinger, 1887), M. costalis (Staudinger, 1887)와 M. strigulosa (Staudinger, 1887)을 중국에서는 처음으로 보고된다. 성충의 외부특징에 대하여 간략하게 재기재하고, 암수생식기의 도해도, 기주식물 및 분포정보를 제시하였다.