• 한국당과학회:학술대회논문집
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• 2006.11a
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• pp.39-39
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• 2006

• Korean Journal of Plant Resources
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• v.21 no.3
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• pp.192-195
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• 2008

This study was conducted to find out some important agronomic characteristics and qualities in response to different transplanting dates in Alisma plantago at southern parts of Korea. Yield components such as number of floral axis per plant, plant height and number of leaves were highest at the transplanting date of Aug. 15 and Aug. 25. Plants sown at Aug. 15 and Aug. 25 also showed highest yield. Considering from our results, optimum transplanting date were semed to be transplanting date of Aug. 15 and Aug. 25.

• Parasites, Hosts and Diseases
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• v.39 no.4
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• pp.307-312
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• 2001

In the course of Clonorchis sinensis infection, antigens presented to the hosts may be in a close relation to growth of the fluke. The antigenic proteins stimulating IgG antibody production were chronologically identified by immunoblot and localized by immunogistochemical staining. In the early stage of infection until 12 weeks post-infection (PI) , antigens were proteins with molecular mass larger than 34 kDa which were derived from the tegument, testes and intrauterine eggs. After 20 weeks PI antigens recognized were 29, 27 and 26 kDa proteins from the intestine, excretory bladder and reproductive organs. It is suggested that the tegumental proteins are the most potent antigens and the excretory-secretory proteins with middle molecular mass of 26-45 kDa contribute to the high level production of antibodies after 20 weeks of the C. sinensis infection.

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.2
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• pp.101-106
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• 2003

This experiment was carried out to investigate the growth characteristics and seed productivities of orchardgrass "Hwabsung 2 ho" according to seeding times in the NLRI from 2001 to 2002. The experimental design was a randomized block arrangement with three replications. Seed was sown on 10th, 20th, and 30th of Aug. and 10th, 20th, and 30th of Sept. in 2000 and 2001, respectively. Establishment of seedling was worse in seeding of Aug. 10th because of rainfall. Number of panicles per $1\textrm{m}^2$ was numerous in seeding of Aug. 20th and was fewer according as seeding time was later. But panicle did not nearly appear in seeding after Sept. 20th. Seeding of Aug. 20th produced seed yield of 759kg/ha and have most seed yield components. But according as seeding times were later than Aug. 20th, the seed yield was linearly decreased with seed yield components worse.nts worse.

• Journal of Broadcast Engineering
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• v.6 no.2
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• pp.121-130
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• 2001

We propose an efficient DCT-domain video transcoding algorithm for flexible for bit-rate video communications. Video transcoding provides communication fiexibility by adaptively changing the bit-rate of compressed bit stream. During the transcoding process, adrift error is unavoidable because of the difference between reference images in the series of encoding and decoding. For solving the drift error problem, cascade pixel-domain transcoder (CPDT) has been proposed. CPDT, however, requires highly complex hardware and heavy computational overhead. In this paper we propose a DCT-domain transcoding technique, which enables efficient transcoding without any drift error. The proposed cascade DCT-domain transcoder (CDDT) is realized by new motion compensation and down-sampling methods in the DCT-domain.

• Journal of Microbiology and Biotechnology
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• v.13 no.4
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• pp.584-590
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• 2003

The xylA gene of Bacillus stearothermophilus No. 236 encoding ${\beta}-xylosidase$, a major xylanolytic enzyme, was previously cloned and sequenced by the present authors. Sequence analysis indicated that translation of the xylA gene was initiated from the noncanonical initiation codon UUG, confirmed by analyzing three different amber (UAG) mutants of the xylA gene. In the present study, the UUG initiation codon was mutated into AUG or GUG, and the effects of the mutations on the XylA synthesis were examined. The AUG initiation codon was found to direct the highest level of ${\beta}-xylosidase$ synthesis; three-fold and fourteen-fold more enzyme activity than the UUG codon in E. coli and B. subtilis cells, respectively. Surprisingly, contrary to other systems reported to date, the UUG start codon was found next to AUG in the relative order of translational efficiency in both organisms. In addition, a greater abundance of the xylA mRNA was detected with the AUG start codon in both of these host cells than with GUG or UUG. Northern blot and Toeprint assays revealed that this was due to enhanced stability of mRNA with the AUG initiation codon. As expected, the ${\beta}-xylosidase$ protein level in the bacterial cells containing mRNA with the AUC start codon was also much higher than the levels with the other two different mRNAs.

• Korean Journal of Organic Agriculture
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• v.23 no.2
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• pp.267-280
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• 2015

The study was conducted to evaluate effects of time and degree of defoliation on growth of 'Wonhwang' pear (Pyrus pyrifolia Nakai) trees managing with low pesticides as well as regrowth of cuttings in vitro. Treatments included degree of defoliation (20% and 60%) with time of defoliation (Early-Aug, End-Aug, and Early-Sep); Early-Aug (20%), Early-Aug (60%), End-Aug (20%), End-Aug (60%), Early-Sep (20%), Early-Sep (60%), and No defoliation. No defoliation and Early-Sep (20%) defoliation increased growth of water sprouts and new shoots, which were improved by delayed defoliation or 20% of defoliation. Total-C, total-N, B, and free sugar contents increased in No defoliation-shoots but decreased in End-Aug (60%)-shoots. Delayed defoliation increased total-C, total-N, and free sugar in shoots, with high contents of C, K, Ca, Mg, and B observed for 20% of defoliation-trees. Fruit yield and weight or fruit length increased in No defoliation, End-Aug (20%) defoliation, and Early-Sep (20%) defoliation, but reduced in End-Aug (60%). Fruit soluble solids content reduced in defoliation in August. Time of defoliation did not affect the fruit yield and fruit quality, while degree of defoliation influenced yield and fruit weight and length. Defoliation at End-Aug (60%) mostly increased the leakage rates of the stem cuttings at $-18^{\circ}C$ and $-21^{\circ}C$ in vitro and reduced the germination rates at $-24^{\circ}C$ and $-27^{\circ}C$. Under comparison of time and degree of defoliation, the Early-Sep defoliation increased germination rates of the stem cuttings at $-27^{\circ}C$ in vitro, and 60% of defoliation decreased the germination rates compared to the 20% of defoliation.

• Journal of Chest Surgery
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• v.14 no.4
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• pp.359-363
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• 1981

From Aug. 1975 to Aug. 1981,3 patients with primary benign rib tumors have been treated at the department of thoracic surgery, Paik Hospital, Seoul, Korea. Of these, one was aneurysmal bone cyst and two were fibrous dysplasia. Complete excision of the benign tumor including rib resection was performed in all patients and resulted in long term cure.

• Bulletin of the Korean Chemical Society
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• v.24 no.6
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• pp.792-796
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• 2003

Polychlorinated dibenzo-p-dioxins (PCDDs) are extremely toxic and persistent environmental pollutants. Their chemical reactivities and other physicochemical/biological properties show a strong dependence on the chlorination pattern. With increasing the number of chlorines, dioxin congeners become more electronegative and gain higher electron affinities. The vertical electron affinities (VEA) are related with the LUMO energies of neutral molecules. LUMO energies of all PCDD congeners were calculated at the B3LYP/6-31G** level and those of some selected congeners at the level of B3LYP/6-311G**//B3LYP/6-31G** and B3LYP/cc-pvtz/ /B3LYP/6-31G**. The total energies of neutral and anionic species for dibenzo-p-dioxins (DD), 1469-TCDD, 2378-TCDD, and OCDD were calculated at the level of B3LYP/6-31G**, B3LYP/aug-cc-pvdz, and B3LYP/ aug-cc-pvtz//B3LYP/6-31G**. By using the four congeners with D2h symmetry as reference molecules, we could estimate VEA (B3LYP/aug-cc-pvdz) of 75 PCDD congeners based on the linear correlations between LUMO energy and VEA (B3LYP/6-31G**) and between VEA (B3LYP/6-31G**) and VEA (B3LYP/aug-ccpvtz// B3LYP/6-31G**). Results show that all PCDDs with the number of Cl ≥ 3 have positive electron affinities. The PCDD electron affinity values provided in this work can be a useful data set in understanding the congener-specific reactivities of dioxins in various environmental media.

• Korean Journal of Agricultural Science
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• v.24 no.1
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• pp.85-93
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• 1997

This paper is aimed to study on sales promotion strategies for the increment of farm income by cultivating Boxthron in Chongyang Area. Marketing Survey was done in Chongyang Boxthron market, Kyoung-dong herb market in Seoul. The results are as follows ; Reviewing the Boxthron market prices, the price of direct transaction was the highest one and that of Agricultural Cooperatives was next one, Chongyang market price was lowest one. Therefore, the efforts including exclusive labeling, high class packing strategies of Boxthron with lower pollution would be necessary. The seasonal variation Boxthron prices were lowest in Aug.-Sept., harvesting season, and highest in april-june prices, off-crop season. Farmers have sold 45% of all products in Aug.-Oct. at lowest price and the remaining 15% of that sold in april-june at the highest prices. On account of the above reasons, loan for Boxthron production, government purchasing and storage program of it especially in harvesting season from Aug. to Oct. should be adopted to increase Boxthron producer income. Finally, the strategies for sales promotion, enforcement of government supporting activities including export strategies and the development of new processed products of Boxthron should be propelled considering the products cycle.