• Journal of Korean Medicine Rehabilitation
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• v.15 no.1
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• pp.67-75
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• 2005

목 적 : 면역 세포에서 주로 생성되는 사이토카인인 인터루킨-1 (interleukin-1)은 다양한 신경내분비계와 대사 기능에 영향을 미치며, 비만인의 말초혈액 단핵구에서 증가하는 경향이 있는 것으로 연구보고 되고 있다. 본 연구의 목적은 $IL-1{\alpha}$ 다형성과 사상체질이 비만과 관련이 있는지를 조사하는데 있다. 연구방법 : 본 연구에서는 현저한 체질량지수 (body mass index, BMI) 다양성을 보이는 건강한 한국 여성 182명을 대상으로 $IL-1{\alpha}$ 유전자형을 분석하였다. 결 과 : T 대립 유전자는 BMI 감소와 관련이 있었다. BMI $27-30kg/m^2$ 그룹(group III)에서 T 대립유전자의 빈도는 $25kg/m^2$ 미만의 그룹(group I)에 비하여 유의하게 감소하였다 (odds ratio, OR, 0.141; 0.25% CI, 0.04-0.54). 더욱이 태음인 여성에서 $IL-1{\alpha}$ T 대립유전자의 빈도가 normal group에 비하여 overweight group (BMI $27-29kg/m^2$)에서 명확하게 감소하였다 (OR, 0.139; 95% CI, 0.04-0.54). 결 론 : 본 연구에서 175명의 체질분석결과 $BMI{\geq}25$인 군들의 태음인의 빈도가 높았으며, BMI는 CC genotype를 가진 사람에서보다 CT+TT genotype를 가진 사람에게서 더 낮았다. 태음인에서 동형접합 또는 이형접합 T 대립유전자가 $BMI{\geq}25$인 군에서 유의하게 감소하였다. 이상의 결과는 한국 여성에서 $IL-1{\alpha}$ 유전자 조절부위에 위치한 -889C/T 다형성과 비만 및 사상체질의 관련되는 것을 의미한다.

• Journal of Life Science
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• v.16 no.3 s.76
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• pp.382-386
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• 2006

A total number of 20 cat samples including 8 parentage testing and 12 individual identification were genotyped. Genomic DNA was extracted from buccal swab, and genotyped by using 10 microsatellite markers (FCA005, FCA26, FCA224, FCA240, FCA453, FCA293, FCA075, FCA105, FCA229, and FCA651). This method consisted of single PCR procedure and showed reasonable amplification of all PCR products. Genotypes were determined by genetic analyzer. The number of alleles per locus of cats varied from 3 to 8 with a mean value of 5.5. Expected heterozygosity was ranged from 0.390 to 0.827 (mean 0.639) and the total exclusion probability of 10 microsatellite loci was 0.9441. Of the 10 markers, FCA240 marker has relatively high PIC value (>0.7). Of the 8 cats, 7 cats were qualified by compatibility according to the Mendelism. These results can give basic information for developing parentage verification and individual identification system in cat.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.48 no.3
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• pp.152-155
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• 2003

Burcucumber (Sicyos angulatus L.), used as a medicinal or rootstock for cucurbitaceous crops have shown high variation in seed maturity and size. This study was carried out to determine the effect of seed maturity and size on seed germination, seedling emergence and growth of burcucumber, Seeds collected from a native site were divided into small, medium and large ones after sorted to mature and immature ones. Their germination, seedling emergence and growth were done in indoor and a green house. Mature seeds showed higher germination and seedling emergence rate than immature ones. Regardless of their maturity, medium. and small seeds showed higher germination rate than large ones. Medium and large seeds, however, had the greatest and the least seedling emergence, respectively. Seedling height, number of true leaves areas of cotyledons and true leaves except hypocotyl length were increased with increased seed size although were not affected by the maturity. Cotyledon, leaf, hypocotyl, root and their total dry weights were greater in large mature seeds than large immature ones while increased with increased seed size in both maturities.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.2
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• pp.109-113
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• 1984

This study was conducted to get basic information about yield capacity and major agronomic characteristics of rice varieties with large grain. The results obtained are as follows; Between grain weight and grain components such as length, width and thickness showed highly positive correlation. The relationship between grain length and grain shape (Length/Width) was clear (r=0.5707${\ast}\;{\ast}$). 1, 000 grain weight of 14 rice varieties with large grain was negatively correlated with number of spikelets per panicle, number of panicles per hill, ripening ratio, total dry matter, grain yield and harvest index, but less clear. The relationship between grain weight of 14 rice varieties with large grain and growth duration was less clear (r=0.440). 1, 000 grain weight of 20 rice varieties differing in grain size showed a highly positive correlation with chalkiness of rice kernel (r=0.8477${\ast}\;{\ast}$).

• Korean Journal of Breeding Science
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• v.42 no.2
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• pp.188-194
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• 2010

This experiment was conducted to characterize the inheritance of petal color, flower-eye color, flower shape, leaf variegation pattern, and leaf-end shape in Cyclamen persicum. The segregation of $F_2$ and backcross populations from crosses between inbred lines was tested for Mendelian inheritance mode. From four different combinations of crosses, it was found that the petal color was controlled by a single incomplete dominant gene. The other characters, flower-eye color, flower shape, leaf variegation pattern and leaf-end shape were confirmed to be controlled by single complete dominant genes.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.4
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• pp.462-468
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• 1983

Collected 38 colored soybeans, which was cultivated under the conventional field conditions, were investigated about their organeloptic parameters and correlations among factors such as organeloptic score, texturometer parameters and chemical components of seeds. Most of the organeloptic parameters were affect much more by the characteristics of each cultivars than by grain weight, and then showed significant differences with the effect of interactinon between grain weight and cultivar, too. Also among contribution degrees of texturometer scores to overall acceptance, cohesiveness was higher in small, medium and super grains, however in large grains, hardness. And among sensory attributes, suitable toughness was contribute most positively to acceptance.

• Korean Journal of Breeding Science
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• v.41 no.2
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• pp.115-125
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• 2009

This study was undertaken to investigate the genetic diversity and to develop a technique for cultivar discrimination using SSR markers in rice. Sixty-seven recently distributed rice cultivars in Korea from 1998 to 2005 were evaluated by 20 SSR markers. A total of 149 alleles were produced ranging from 4 to 14 alleles with an average of 7.5 alleles per locus. The molecular weight of alleles per locus varied from 4 bp (RM253) to 51 bp (RM335), and PIC values ranged from 0.45 (RM202) to 0.87 (RM204) with an average of 0.67. Of them, seven markers, RM204, RM257, RM21, RM224, RM249, RM253, and RM264, were selected as key markers for differentiating rice varieties. The seven markers produced a total of 67 alleles with an average of 9.6 alleles per marker. PIC values ranged from 0.48 (RM253) to 0.87 (RM204) with an average of 0.72. The 63 cultivars (94%) out of 67 cultivars could be individually identified by the genotype using the seven SSR markers, which will be applicable to discriminating rice cultivars.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.65 no.3
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• pp.199-213
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• 2020

Grain size and shape are the two important components contributing to rice yield and quality. To analyze traits related to grain-shape, a total of 272 varieties derived from japonica, japonica black and Tongil-type rice accession in Korea were evaluated in this study. The traits, grain length (GL), grain width (GW), grain thickness (GT), length to width ratio (RLW), and 1000-grain weight (TGW) were measured and replicated 10 times. Genes (GW2, GS3, qGL3, qSW5, GS5, TGW6, GW7, and GW8) related to grain-shape were validated in the accessions using specific DNA marker sets. K-mean clustering of the accession based on phenotypic data revealed three groups: group 1 was classified by GW and GT and included most of japonica type, group 2 was classified by RLW and GL reached a medium size and possessed a half spindle-shaped type, and group 3 was classified by TGW, reached a long size and possessed a semi-round shape. In validation tests using the marker sets, both gw2 and tgw6 were validated in less than 1% of the tested accessions and two allelic types, qgl3 and gw8, were only verified in Tongil-type accessions. For GW8 and GW2, any different amplicons were not amplified in any japonica or Tongil-type accessions, respectively. In order to suggest the representative grain-shape gene combinations for each ecotype, the allelic combinations were evaluated by PCR analysis. Cj1 and 2 in japonica (Cj1-7), Cj_b1 and 2 in japonica-black (Cj_b1-3), and CT3 in Tongil-type (CT1-13) turned out to be the dominant combination in each ecotype, respectively. In addition, the results revealed that introgression of four genes (gw2, gs3, qSW5, and GS5) would expand the diversity of grain shape in Korean japonica varieties. The gene combinations information could be utilized practically to understand or enhance grain shape in japonica rice breeding program.

• Journal for History of Mathematics
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• v.25 no.3
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• pp.53-75
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• 2012

When imaginary numbers were first encountered in the 16th century, mathematicians were able to calculate the imaginary numbers the same as they are today. However, it required 200 years to mathematically acknowledge the existence of imaginary numbers. The new mathematical situation that arose with a development in mathematics required a harmony of real numbers and imaginary numbers. As a result, the concept of complex number became clear. A history behind the development of complex numbers involved a process of determining a comprehensive perspective that ties real numbers and imaginary numbers in a single category, complex numbers. This came after a resolution of conflict between real numbers and imaginary numbers. This study identified the new perspective and way of mathematical thinking emerging from resolving the conflicts. Also educational implications of the analysis were discussed.

• The Korean Journal of Applied Statistics
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• v.28 no.6
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• pp.1181-1189
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• 2015

The treatment effect in clinical tests depending on dose of the drug; however, it can show a decreasing trend in fixed dose level due to side effects. The trend is known as an umbrella pattern; in addition, the method for the umbrella alternative is quite useful when the tendency is predicted in advance. In this paper, we propose a nonparametric method of umbrella alternatives for a one-way layout by using linear placement described in Orban and Wolfe (1982). The Monte Carlo simulation is adapted to compare the power of proposed procedure with previous methods.