핵연료 운반용 실린더의 재사용을 위한 용기세척공장의 제염공정에 대한 성능을 평가하기 위하여 Na2CO3 + H2O2 혼합용액의 조합을 약간 달리한 2회의 시험을 실행하였다. 각 시험은 모두 일련의 5 단계에 걸쳐 실시되었다. 우라늄 제염의 주 화학종은 Na4UO2(CO3)3 로 식별되었다. 그리고 첫 단계에서의 세척액은 물이었으며, 이 단계에서 50% 이상의 우라늄이 제염되었다. 그 이후로는 단계가 더해 갈수록 우라늄의 제염양은 지수함수적으로 감소하는 경향을 나타내었으며, 화학양론적으로 제거된 우라늄에 비하여 투여된 Na2CO3 의 양은 과다함을 나타내었다. 이러한 결과들에 의하면, 공정최적화를 통하여 Na2CO3 의 투여량 감축, 세척폐액의 감량, 제염단계 축소 등을 꾀할 수 있을 것으로 판단된다.

Background : This study was conducted to serve as a basis for the production of high quality organic cultivation Platycodin grandiflorum Ridix roots by analyzing the content of saponins according to organic fertilizer for organic farming. Methods and Results : Platycodin grandiflorum Ridix was treated by with biodegradable film, rice husks, and sawdust, non-mulching (hand weeding). A root of Platycodon grandiflorum were analyzed saponins using HPLC harvested on October. Content of Plantycodin D3 was an average of 68.5 ㎎/100g, which appeared as 111.2 ㎎/100g highest content in the sawdust treated. Deapioplatycodin D showed the highest 48.1 ㎎/100g in the sawdust treated. The content of Platycodin D was shown to 246.2∼373.8 ㎎/100g, the highest values were observed in non-mulching, it showed the lowest value in the rice husks treated. The content of Polygalacin D showed up to 156.0 ㎎/100g in the non-mulching as the biggest difference, the lowest value were 30.1 and 32.2 ㎎/100g in sawdust and rice husks treated. Large differences between fertilizers was not showed, but the overall saponin content of Platycodin grandiflorum Ridix were low in value compared to the control than organic fertilizers. Conclusion : Large differences between mulching materials was showed, thus the overall saponin content of Platycodin grandiflorum Ridix was highest in value compared to non-mulching than sawdust treatment. Mulching Platycodin grandiflorum Ridix with sawdust was an effective method for improving saponin contents.

Background : The root of Platycodin grandiflorum has been widely used as a crude drug or a dependent on the cultivation area and cultivation method. Therefore, this study was conducted to know the effect of organic fertilizer on the changes of antioxidents and antioxidant activity of Platycodin grandiflorum Ridix. Methods and Results : As basal fertilizer were treated before transplanting Platycodin grandiflorum Ridix with chemical fertilizer(Super21, 21-17-17, Namhae Chemical), mixed organic fertilizer, bacterial culture, fermented oil cake and manure in each trial of nitrogen based on 3㎏/10a criteria. The total polyphenol content was highest values were 15.5mg/g appear in the mixed organic fertilizers, the lowest were 9.1mg/g appeared in the manure and control. Flavonoid content showed the highest 15.3 mg/g in the mixed organic fertilizer, and investigated at the lowest 5.0 mg/g in the fermented oil cake. ABTS radical scavenging activity was the highest in was 65.7 mgTE/g in the chemical fertilizer, showed the lowest value in the control to 13.0 mgTE/g. Therefore, both flavonoid and polyphenol content showed a high value on organic fertilizers. Conclusion : Therefore, both flavonoid and polyphenol content showed a high value on organic fertilizers. It is determined that to have researches for a variety of antioxidants by the organic fertilizers made in the future.

Background : This study was conducted to serve as a basis for the production of high quality organic cultivation Platycodin grandiflorum Ridix roots by analyzing the content of saponins according to organic fertilizer for organic farming. Methods and Results : As basal fertilizer were treated before transplanting Platycodin grandiflorum Ridix with chemical fertilizer(Super21, 21-17-17, Namhae Chemical), mixed organic fertilizer, livestock manure, bacterial cultures and fermented oil cake in each trial of nitrogen based on 3 ㎏/10a criteria. A root of Platycodon grandiflorum were analyzed saponins using HPLC harvested on October. Content of Plantycodin D3 was an average of 40.6 ㎎ /100g, which appeared as 48.1 ㎎/100g highest content in the bacteria cultures treated. Deapioplatycodin D showed the highest 70.9 ㎎/100g in the control, the rest was investigated 28.1∼54 ㎎/100g. The content of Platycodin D was shown to 327.4∼373.8 ㎎/100g, the highest values were observed in mixed organic fertilizer, it showed the lowest value in the control. The content of Polygalacin D showed up to 336.7 ㎎/100g in the manure as the biggest difference, the lowest value were 54.5 and 74.2 ㎎/100g in bacterial cultures and control. Large differences between fertilizers was not showed, but the overall saponin content of Platycodin grandiflorum Ridix were low in value compared to the control than organic fertilizers. Conclusion : For the increasing the yield that Pharmacological effect, organic fertilizer is effective to increase the number of fine-root high which high contented with saponins.

Regulations in the EU, Japan, Korea, etc. require that foods and feeds made of or derived from genetically modified organisms (GMOs) should be approved and labeled according to a threshold. Recently, disease resistant transgenic rice was developed in Korea, which resulted from the transformation events involving choline kinase gene, OsCK1. In order to monitor unintended release of the developed GM rice in the near future, as well as to meet GM-labeling requirements, the development of a reliable method for detection of disease resistant GM rice is requisite. Here, specific primer pairs for the detection of GMO was designed on the basis of a introduced gene and the flanking junction sequences between a plant DNA and a integrated gene construct, and also SPS gene was used as an endogenous reference material. Specificities of all designed primers were tested through qualitative PCRs. Clearly, target specific amplicons could be detected from disease resistant GM rice event. In addition, the limits of detection (LOD) using the event-specific primers were approximately 0.1% for the disease resistant GM rice line. This result indicated that the developed detection method is suitable for the traceability of disease resistant GM rice, because of using the primer specifically corresponded to the junction site between plant genomic DNA and inserted DNA. Keywords: genetically modified organisms, disease resistant GM rice, PCR detection, event-specific primer

The mode of inheritance and allelic relationship of resistance genes in a Korean landrace, Guju and a Korean weedy rice, Geumleungaengmi 33 were studied using Korean isolate (HB9101, race K1) of Xanthomonas oryzae pv. oryzae. The analysis of F₁

The inheritance of resistance to bacterial blight in a Tongil-type rice cultivar 'Changseongbyeo' was studied using a Korean isolate HB9101. which belongs to race K1 . The resistance of Changseongbyeo to the HB9101 was controlled by a single dominant gene. This gene was allelic with Xa-1 gene and linked to Ig gene on chromosome 4 with the recombination value of 7.5%.