• 아시안잔디학회지
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• 제12권1호
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• pp.31-48
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• 1998

In this paper, pollen types of plants and Pb, N, P, K, Ca and Na in pallens of trees were investigated to control the air and soil pollutions. Morphological types of about 500 species of plants were identified to make the best use of paleontology, medicine and pharmacy. There were the positive correlations between Pb, N, P, K,Ca and Na contents in pollens and soils, respectively. A heavy metal, Pb, contained in pollens was not absorbed by rats. This fact should be utilized to purify air and soils polluted by Pb. Key words: Pb, Pollen, Pollution, puripication, Control.

• 원예과학기술지
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• 제35권4호
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• pp.510-522
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• 2017

To better understand the morphological variation for Perilla crop in different areas of China, we studied the morphological variation in 87 accessions (84 cultivated var. frutescens and three cultivated var. crispa) from high latitude (Northeast China) and middle latitude (North and Northwest China) areas of China by examining seven quantitative and 10 qualitative characters. Analysis of the morphological variation determined that there was significant morphological differences in five quantitative traits between cultivated var. frutescens and cultivated var. crispa, including effective number of branches (QN2), number of internodes (QN3), number of branches (QN4), length of the largest inflorescence (QN5), and days from germination to flowering (QN7). However, two quantitative traits-plant height and number of florets of the largest inflorescence-did not show any significant differences between cultivated var. frutescens and cultivated var. crispa. In addition, significant differences for six quantitative traits were found between the accessions of cultivated var. frutescens originating from high and middle latitude areas in China, which included QN2, QN3, QN5, number of florets of the largest inflorescence (QN6), and QN7. Principal components analysis (PCA) identified five quantitative characters [plant height (QN1), QN2, QN3, QN4, QN7] and six qualitative characters [fragrance of plant (QL1), color of reverse side of leaf (QL3), degree of pubescence (QL5), color of flower (QL6), shape of leaf (QL7), and hardness of seed (QL10)] that contributed to the positive direction on the first axis. The other quantitative and qualitative characters contributed to the negative direction on the first axis. Most accessions of cultivated var. frutescens and cultivated var. crispa were clearly separated by the first axis. In addition, most accessions of cultivated var. frutescens are from high latitude and middle latitude areas that were clearly separated by the first axis, except for several accessions. The findings from this study will provide useful information towards understanding the morphological variation of Perilla crop according to geographical distribution in high and middle latitude regions of China.

• 대한치과보철학회지
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• 제22권1호
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• pp.23-32
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• 1984

The effects between preexisting four types and one that author had designed of posterior palatal seal on the retention of denture base were compared and observed from six systemically healthy edentulous subjects. Using one without posterior palatal seal as the control, the retention of each type was measured and analyzed six times with cantilever type Load cell after adaptation of denture base, which were constructed with usual manner. The following results wear obtained. 1. Morphological and positional changes of posterior palatal seal effected on denture retention. 2. No specific type showed most desirable effect in every experimental subject. 3. Experimental subject I, II, VI showed higher retention on the control in every type. 4. In five types of posterior palatal seal, for subject III, VI F types and for subject II, V C types were most effective. 5. In each experimental subject F type showed higher retention than the control.

• 천문학회보
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• 제40권1호
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• pp.74.3-74.3
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• 2015

We present 2D- photometric decompositions of ~1,200 nearby dwarf galaxies. Our representative sample is derived from 'A catalog of Visually classified galaxies in the Local Universe'(Ann, Seo and Ha APJS,,,2015) of which galaxy morphological types are determined by visual inspection of color images using the Sloan Digital Sky Survey data release 7. In this catalog, dwarf galaxies were divided into 5 subtypes : dS0, dE, dSph, dEbc, dEblue with distinction of the presence of nucleation in dE, dSph, and dS0. The dSph types are less brighter than other types, and galaxies with nuclei are slightly brighter than those with no nuclei in the same types. Sersic index n have a range 1~1.5, and $dE_{un}$ and $dSph_{un}$ galaxies have n less than 1, and $dSph_n$ galaxies have largest values. We performed two-dimensional decomposition of galaxies using GALFIT, and analyzed their structural components, and residual features which are seen in the residual image.

• 한국동물학회지
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• 제39권2호
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• pp.147-158
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• 1996

Since the floating goby, Choenogobius onnuloris, has intricate and diverse morphological variations, allozymic analysis at 25 loci was carried out for their populations in Korea to clarify its taxonomic status. A genetic assay carried out revealed that the floating gobies were clearly divided into three genetic groups (Tvpe-A, Tvpe-B and Tvpe-C) in Korea. Alternative alleles were fated at six loci (Aco, 6pgd, Ldh-1, Got-1, Gpf, Gp3l. Some loci had considerable heterogeneitv among three types and no evidence of gene exchange in slunpatric populations was found from statistical analyses. The genetic similarity (Rogers'S) among three types was lower than 0.80 and divergent time estimate indicates that they were speciated during 1.2-1.8 million year before present (WBP). ASso, these three types of C. unnuluris were distinguished morpholosicallv from each other by several characters such as band ornamentations. In conclusion, the evidences presented here support recognition of three types of Chuenogobius annularis as typical discrete species.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.127.1-127
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• 2003

We describe two new Trichoderma species associated with oyster mushroom in Korea. Trichoderma green mould has been one of the most serious diseases of oyster mushroom in Korea. Of these the predominant species are two unrecorded species. We designed as Trichoderma sp. Korean type 1 (Th K1) and Trichoderma sp. Korean type 2 (Th K2), respectively. Th K1 and Th K2 can be distinguished from previously reported Trichoderma species as well as each other in morphological characteristics including growth rate at 35$^{\circ}C$, colony morphology, conidia shape and branch pattern of phialides. Sequence of the ITS region of rDNA, the protein coding translation elongation factor gene(EF-1${\alpha}$), and RNA polymeraseII (RPB2) not only clearly separated Trichoderma sp. Korean types from their closely related T. harzianum biotype but also distinguished them from each other. Analyses of the EF-1${\alpha}$ and RPB2 sequences were found to be more useful for establishing systematic relationships among Trichoderma isolates than those of the ITS sequence. Based on the results of morphological and molecular characteristics. We propose the two Trichoderma sp. Korean types as the new species

• Applied Microscopy
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• 제20권2호
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• pp.12-22
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• 1990

The morphological characteristics and changes of the foregut in the grasshopper (Oxya sinuosa Mistshenko) have been studied with the special reference to the developmental stage. In light microscope level, the epithelia are seen the cuboidal shape in the 5th instar nymph and the adult. A number of pigment granules are appeared in the cuboidal epithelium of the 5th instar nymph, however the pigment granules were a few in the adult. Indistinct or undifferentiated folds of the epithelial layer were appeared in the 5th instar nymph, whereas the well-developed folds were in the adult. The well-developed muscular layers are seen in the 5th instar nymph, however in the adult the muscular layers are appeared thin or a few layer except the crop. In electron microscope level, in the foregut epithelium, a few round or oval shaped mitochondria, well-developed rER, Golgi complex, lysosome and a number of vacuoles were appeared in the cytoplasm. Two types of pigment granules, electron dense or homogenous and low electron dense or lamellar profiles, are seen in the esophageal epithelium. The crystalline profiles and plasma membrane infoldings were also appeared. In the foregut epithelium of the 5th instar nymph, however the cell organelles were generally undifferentiated and in the crop two types of pigment granules as the adult esophageal epithelium were also found.

• 대한두경부종양학회지
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• 제14권1호
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• pp.76-80
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• 1998

Generally, the papillary carcinoma generally has a favorable prognosis, and several variants of pathologic heterogeneity are recognized. Variants that are regarded as more aggressive are tall cell, columnar cell, and diffuse sclerosing types. Seventeen cases of papillary thyroid carcinoma showing clinically aggressive behavior, invading extrathyroidal structures, were retrospectively reviewed to evaluate the morphological variants of the tumors. Six of them were found to be pure papillary and nine were mixed types regarded as non-aggressive variants. Four cases were found to be tall cell variants, two cases of non-extrathryoidal invasion and two of extrathyroidal invasion regarded as aggressive variants. Our findings suggest that the prognosis of papillary carcinoma not always be based on its morphological variant and more attention should be given to other clinical parameters.

• Mycobiology
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• 제35권4호
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• pp.230-234
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• 2007

In order to breed a Cordyceps bassiana isolate that stably forms fruiting body in artificial cultivation, isolates derived from subculturing and single spores were tested through mating. From C. bassiana EFCC 783, three subcultured isolates EFCC 2830, EFCC 2831 and EFCC 2832 were obtained and fourteen single conidial isolates were obtained from these three subcultured isolates. Two different morphological types were found in the fourteen single conidial isolates. One type was able to form synnemata and another type was not able to form synnemata. Since switch of morphological type was not observed despite their continuous subculturing, cross was performed between the two types and the formation of fruiting body was examined. Ascospores were obtained from a selected fruiting body formed by hybrid of the cross. Self-cross and combinational cross of the ascospore-derived isolates generated hybrids that stably produce high quality fruiting body in artificial media.

• 한국가축번식학회지
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• 제23권1호
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• pp.45-51
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• 1999

본 연구는 성성숙한 번식기의 한국산 숫컷 꿩을 대상으로 번식연구의 기초자료를 얻기 위해 곡세정관의 정자형성세포를 분류하였다. 그 결과는 다음과 같다. 1. 정조세포는 A형, In형 및 B형의 3 가지 정조세포로 분류되었다. 2. 제 Ⅰ정모세포는 전세사기, 세사기, 접합기, 태사기 및 이동기의 5가지 형 제 1 정모세포로 분류되었다. 3. 정자세포는 핵의 변화에 따라서 둥근 정자세포에서 장축성장한 정자세포로 성장하는 과정을 7 단계로 분류되었다.