• Journal of Sericultural and Entomological Science
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• v.51 no.2
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• pp.130-136
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• 2013

We bred a mulberry cultivar named Shimheungppong, through local adaptability test, which is under registration as a new cultivar for fruit production. Local adaptability test had been carried out at three places(Suwon, Wanju, and Jinju) for six years from 2004. This is tetraploidy variety belonging to (Morus alba L.) selected among mulberry genetic resources preserved in Suwon. Shimheungppong was high yielding cultivar in fruit productivity by 5% compared to control cultivar 'Chungilppong(Morus alba L.)' for four years. Although Shimheungppong was a little lower in sugar content of mulberry fruits, it was bigger than that of Chungilppong. It is adaptable to every where except the places where cold damage and sclerotic disease happen frequently.

• KSBB Journal
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• v.20 no.4
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• pp.285-290
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• 2005

Benzophenanthridine alkaloids - sanguinarine, chelirubine, macarpine, and chelerythrine are produced from Eschscholtzia californica (Californica Poppy, used as a sedative by Native Americans) and most of them are derived from dihydrosanguinarine. The properties of sanguinarine are the basis of its antimicrobial activity and its use in chemosurgery and skin cancer excision. For overproduction of sanguinarine from E. californica, yeast extract was used as elicitor and the elicited cell's metabolites were checked. Sanguinarine production was increased intracelluarly about 8 times in the cell and 5 times extracelluarly. We have peformed proteomic analysis of proteins sequentially extracted from E. califormica suspended cells which were cultured with elicitor, an increase of spot intensity was seen at 24 hours following elicitation. These proteins were separated by two-dimensional electrophoresis (2-DE). We found several spots that were expected to be related to benzophenanthridine alkaloids production by comparing the production profiles of metabolites such as sanguinarine. These results demonstrate the use of metabolite analysis as a tool for detecting target proteins related to metabolites production pathway.

• Proceedings of the Optical Society of Korea Conference
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• 2000.02a
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• pp.288-289
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• 2000

SBN, BSKNN KNSBN 등의 tungsten-bronze 계열에 속하는 광굴절 결정은 짧은 파장에서 좋은 감광도와 빠른 응답시간을 갖는다. 이중에서도 KNSBN 결정은 큰 크기의 결정 성장 및 도핑이 용이하고 광굴절 결정에서 중요한 특성 중 하나인 열 안정성(thermal stability)이 좋기 때문에 빠른 응답특성이 요구되는 응용분야에서 촉망받는 매질이다. 본 논문에서는 광정보저장, 광정보처리, 광컴퓨터, 광통신과 같은 다양한 분야에서 응용가능성을 가지는 Cu가 0.04wt.%도핑된 5mm$\times$5mm$\times$5mm 크기의 KNSBN 결정을 이용한 광신호의 증폭기술에 대하여 연구하였다. 먼저 Cu-KNSNB 결정의 2광파 결합 특성을 분석하기 위하여, 기록 파장에 따른 지수이득계수의 외부입사각의존성, 최대 지수이득계수를 나타내는 외부입사각에서 입사빔의 세기비에 따른 2광파 결합 이득을 측정하였다. 또한, 632.8nm파장 영역에서 기록 및 삭제시간 상수, 회절 효율의 입사빔 세기비 의존성을 측정하였다. 그리고, 음향-광학 변조기(AOM: acousto-optic modulator)에 의해 진폭 변조된 신호빔을 이용하여 광신호 증폭특성을 분석하고 그 결과를 제시하였다. 이때 두 빔의 입사각은 최대 지수이득계수를 나타내는 입사반각 12$^{\circ}$로 고정하고, 감쇄기를 이용하여 신호빔의 세기를 조절하면서 신호빔의 차동이득을 측정하였다. 투과된 신호빔은 같은 주파수에서 차동 이득(diffrerential gain)을 보였으며, 이는 moving grating과 시간-변조된 신호빔(또는 펌프빔)사이의 새로운 상호작용은 광굴절 결정의 시간 적분 특성에 의한 것이다. (중략) 경우는 상온에서 펌프 펄스의 유지시간이 0.5% 인 경우 레이저가 동작하는 것을 보여주었다. 이는 구조내에서 열전도가 문제가 된다는 것을 의미하는데 위아래가 공기로 둘러 싸여 있어 발생한 열이 가는 유전체 네트웍을 통해서만 전달 될 수 있기 때문이다. (중략)$^4$A$_2$에 의한 nophonon line R$_1$, R$_2$(680.4, 678.5 nm) 및 $^2$T$_1$$\longrightarrow$$^4$A$_2$(655.7, 649.3, 645.2 nm)의 형광방출 스펙트럼을 얻었으며, 형광수명은 0.264 ms로 조사되었다. 제조된 레이저 발진봉은 직경 6.3 m, 길이 45 nm이었다.\pm$0.06kHz Ge $F_4$; -1.84$\pm$0.04kHz$0.04kHz/TEX>0.04kHz 모국어 및 관련 외국어의 음운규칙만 알면 어느 학습대상 외국어에라도 적용할 수 있는 보편성을 지니는 것으로 사료된다.없다. 그렇다면 겹의문사를 [-wh]의리를 지 닌 의문사의 병렬로 분석할 수 없다. 예를 들어 누구누구를 [주구-이-ν가] [누구누구-이- ν가]로부터 생성되었다고 볼 수 없다. 그러므로 [-wh] 겹의문사는 복수 의미를 지닐 수 없 다. 그러면 단수 의미는 어떻게 생성되는가\ulcorner 본 논문에서는 표면적 형태에도 불구하고 [-wh]의미의 겹의문사는 병렬적 관계의 합성어가 아니라 내부구조를 지니지 않은 단순한 단어(minimal $X^{0}$ elements)로 가정한다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.6
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• pp.532-539
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• 1991

This study was conducted to screen genetic stock for resistant to pod shedding. Materials used were 7 recommended varieties in Korea and 211 introduced varieties containing 94 Virginia type, 99 Spanish type and 18 Valencia type varieties. the days from seeding to first anthesis. number of mature pods per plant. 100 seeds weight and shedded pod ratio per total mature pod at harvesting were investigated. And the breaking tensile strength required to detach a pod from its gynophore was measured at a proper time for harvesting of each variety. In addition. factors related to pod shedding were discussed. The first anthesis of Spanish and Valencia types were earlier than that of Virginia type, but Korean recommended varieties which were recognized as Virginia type had relatively earlier anthesis. The varieties of Spanish type yielded more pods compared with those of Valencia and Virginia types. but Korean recom-mended varieties yielded slightly more pods than the others. Seeds weight of Korean recommended varieties was larger than not merely those of Spanish and Valencia types which were small seeds but also those of Virginia type which were large seeds. The breaking tensile strengths between pod and gynophore were various among the varieties belonging to same type. The strength was relatively strong in the Spanish type, but weak in both Virginia type and Korean recommended varieties. Therefore, pod shedding in the varieties of Spanish type was low and high in Virginia type and Korean recommended varieties. There were positive or negative correlations at the 0.1 % significan level among the days to first anthesis. number of pods per plant. seed weight, breaking tensile strength and shedding ratio. The pod shedding is considered a compound character that is affected by the factors such as breaking tensile strength between pod and gynophore, number of pods per plant and seed size.

• Korean Journal of Poultry Science
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• v.41 no.4
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• pp.305-311
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• 2014

Copy number variation (CNV) is a form of structural variation that shows various numbers of copies in segments of the DNA. It has been shown to account for phenotypic variations in human diseases and agricultural production traits. Currently, most of chicken breeds in the poultry industry are based on European-origin breeds that have been mostly provided from several international breeding companies. Therefore, National Institute of Animal Science, RDA has been trying to restore and improve Korean native chicken breeds (12 lines of 5 breeds) for about 20 years. Thanks to the recent advance of sequencing technologies, genome-wide CNV can be accessed in the higher resolution throughout the genome of species of interest. However, there is no systematic study available to dissect the CNV in the native chicken breed in Korea. Here, we report genome-wide copy number variations identified from a genome of Korean native chicken (Line L) by comparing between the chicken reference sequence assembly (Gallus gallus) and a de novo sequencing assembly of the Korean native chicken (Line L). Throughout all twenty eight chicken autosomes, we identified a total of 501 CNVs; defined as gain and loss of duplication and deletion respectively. Furthermore, we performed gene ontology (GO) analysis for the putative CNVs using DAVID, leading to 68 GO terms clustered independently. Of the clustered GO terms, genes related to transcription and gene regulation were mainly detected. This study provides useful genomic resource to investigate potential biological implications of CNVs with traits of interest in the Korean native chicken.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.7 no.1
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• pp.33-37
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• 2011

The ectopic eruption is defined as abnormal eruption which gives to displacement of the teeth and abnormal root resorption of adjacent teeth. The prevalence of ectopic eruption is reported to vary 2~6%, most of them are in the maxilla. Etiologic factors include narrow maxilla, large maxillary teeth, inclined eruption path of the first molar, retruded position of the maxilla and hereditary factor. Irreversible ectopic eruption where the second primary molar is lost often causes mesial tipping and rotation of the permanent molar, unfavorable occlusion and space deficiency for the second premolar. Ectopically erupted teeth should be treated early to maintain normal development of the dentition, harmony of facial growth and occlusal support. The method of the treatment are classified as follows : appliances that is positioned at the contact point for unlocking and the distal movement, fixed appliance that is connected to more than one tooth, and occlusion guiding method after disking or extraction of the second deciduous molar. A case report of a patient with bilaterally ectopic eruption of maxilla and mandible first permanent molar was present. Also, the patient who had experienced the chronic myelogenous leukemia, show various dental developmental complications. The ectopic eruption was treated with a Halterman appliance that was a effective way of correcting of ectopic eruption of the permanent first molar.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.2
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• pp.351-356
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• 2008

Cerebral palsy, a range of non-progressive syndromes of posture and motor impairment, is a common cause of disability in childhood. Self-injurious behavior(SIB) is deliberate harm to the body without suicidal intend, often involving repetitive actions that cause tissue damage. One of the most common orofacial self-injurious behavior is chewing tongue, lip or oral mucosa. This kind of SIB in children is not common in normal children. High occurrence rates are observered in cases of syndromatic, mentally retarded children, and children with congenital disease. Various methods such as behavior modification, behavior control by drugs, body restraints, application of dental appliance, surgery and extraction of teeth have been suggested to control those self-injurious behavior. Using mouthguard as one of dental applainaces is the most conservative and appropriate method in terms of reducing oral self-injurious habits and protection of tissue. This case report describes a child with cerebral palsy who presented with self-injurious ulceration of lip and buccal mucosa. A modified mouthguard was effective in preventing self-injurious oral trauma in a child with cerebral palsy.

• Ocean and Polar Research
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• v.30 no.1
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• pp.109-117
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• 2008

Application of biomarkers for assessing marine environmental health risk is a relatively new field. According to the National Research Council and the World Health Organization, biomarkers can be divided into three classes: biomarkers of exposure, biomarkers of effect, and biomarkers of susceptibility. In order to assess exposure to or effect of the environmental pollutants on marine ecosystem, the following set of biomarkers can be examined: detoxification, oxidative stress, biotransformation products, stress responses, apoptosis, physiological metabolisms, neuromuscular responses, reproductions, steroid hormones, antioxidants, genetic modifications. Since early 1990s, several biomarker research groups have developed health indices of marine organisms to be used for assessing the state of the marine environment. Biomarker indices can be used to interpret data obtained from monitoring biological effects. In this review, we will summarize Health assessment Index, Biomarker Index, Bioeffect Assessment Index and Generalized Linear Model. Measurements of biomarker responses and development of biomarker index in marine organisms from contaminated sites offer great a lot of information, which can be used in environmental monitoring programs, designed for various aspects of ecosystem risk assessment.

• Journal of Life Science
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• v.15 no.2 s.69
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• pp.161-168
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• 2005

In this study, we did the molecular typing of 39 environmental Legionella pneumophila serogroup 1 isolates collected from 2001-2003 in Busan using the pulsed-filed gel electrophoresis (PFGE). PFGE of SfiI fragments were divided into 10 pulsotypes $(A\~J)$, corresponding to $<65\%$ similarity and a subtype within each pulsotype was characterized by $>84\%$ similarity. The major cluster was pulsotype E $(46.2\%)$, which included 18 isolates and was divided into 4 subtypes $(E1\~E4)$. PFGE of NotI fragments were divided into 8 pulsotypes $(a\~h)$, corresponding to $<60\%$ similarity and a subtype within each pulsotype was characterized by $100\%$ similarity. The major cluster was pulsotype f $(38.5\%)$, which included 15 isolates. The ATCC type strain L. pneumophila serogroup 1 was identified as a different molecular pulsotype compare to the Busan isolates. It is possible that L. pneumophila serogroup 1 isolated in Busan with specific DNA pattern is comparable with those isolation in other cities in Korea.

• Korean Journal of Medicinal Crop Science
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• v.9 no.4
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• pp.301-309
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• 2001

This study was conducted to provide the basic information on safflower collections and to identify the variations which could be utilized in safflower breeding programs. The agronomic characteristics was used to clarify the genetic relationships among safflower collections and to classify them into distint genetic groups. There were 21 early maturing collections with less than 80 days in number of days from planting to flowering. The number of primary and secondary branches ranged ${3.8{\sim}14.8\;and\;0{\sim}26.9}$, respectively, and two collections, IT201434 and IT202723, were found to be high branch types. The 101 safflower collections were classified into 11 groups based on the complete linkage cluster analysis using agronomic characteristics. The I, II, III, IV, IX, X and ? groups included the 25%, 33%, 14%, 8%, 2%, 1% and 1% of the collections, respectively. All the collections in the group III were Korean landraces. The collections in group X could be characterized as early emergence, late flowering and high yield components such as the number of capitula per plant, number of seeds per capitula and seed weight per plant. The number of capitula per plant and seed weight per plant, i.e., the two main yield components, had the highly significant positive correlations with stem diameter, number of the primary branches, number of the secondary branches, number of leaves and leaf length.