A new waxy corn hybrid ‘Daedukchal 1’ was developed from single cross between CNU 504 and CNU 2396 at Chungnam National University in 2007. Inbred CNU 504 used as a seed parent and inbred CNU 2396 as a pollen parent were collected throughout domestic regions. Tasseling date of this hybrid was seven days later than that of check hybrid, ‘Chalok 1’. ‘Daedukchal 1’ was 19.7 cm in ear length and 4.5 cm in ear diameter. On yield trial, ear length of this hybrid was increased 29.7% compared with a check hybrid, ‘Chalok 1’. ‘Daedukchal 1’ had white kernels and good eating quality due to high sugar content and thinner pericarp. The ratio of kernel set length/ear length was similar to ‘Chalok 1’. It is moderately resistant to southern leaf blight and northern leaf blight but susceptible to corn borer. The yields of ‘Daedukchal 1’ in fresh ear weight and in number of fresh ear were 16% and 8%, respectively, higher than those of a check hybrid in regional yield trials for two years. Seed production for this hybrid was better because of the consistency of tasseling dates.

"Oraebyeo" is mutation of a high quality japonica cultivar, Ilpumbyeoa new japonica rice(Oriza sativa L.) cultivar developed from by N-methyl-N-nitrosourea(MNU) treatment on fertilized egg cell by the rice breeding team of Gangwon Provincial Agricultural Res. & Ext. Service in 2006. This variety heads 20 days earlier than Ilpumbyeo and similar to that of Odaebyeo an early maturing leading cultivar of northern plain area of Korea. Compared with Odaebyeo has a good semi-erect plant type with lodging tolerance due to much shortened plant hight(l2cm shorter than Odaebyeo). Oraebyeo has similar panicle number with Odaebye where as it has more spikelets per panicle. However, this variety less the ratio of ripened grains and 1,000 grain weight than those of Odaebyeo. The yield performance of this cultivar in milled rice was about 5.09MT/ha in local adaptability test conducted for three years 2002-2004 and 5.51MT/ha in the demonstration plot of farmer's field.

Sanggolbyeo is a new japonica rice cultivar developed from Ilpumbyeo mutation lines by N-methyl-N-nitrosourea(MNU) treatment on fertilized egg cell by the rice breeding team of Gangwon Provincial Agricultural Res.& Ext. Service in 2006. This cultivar has about 135 days growth duration from transplanting to harvesting. Sanggolbyeo has short and round grain and non-glutinous endosperm with very low phytate content, below 50% of Ilpumbyeo, implying it could help men to absorb Calcium from rice. This cultivar shows midium diseases tolerance to leaf blast, bacterial blight, virus and insect pest. The milled rice yield of Sanggolbyeo is about 4.98 MT/ha at ordinary transplanting culture in the local adaptability test. Sanggolbyeo would be adaptable for the mid-northern plain areas of Korea.

"Chugang" as a new double cropping potato variety for table use was bred in 2003 from a cross between H83005-2 with short dormancy and "Superior" with common scab resistance. It had been evaluated for short dormancy, growth adaptability and tuber characteristics every twice a year from 1990 to 1999. Regional yield trials had been performed from 2000 to 2002 at three locations, Jeju, Namhae and Gangneung of Korea, respectively. It has round oblong tuber shape with yellow skin and white flesh color. Its tuber dormant periods is approximately 50~60 days. It showed less physiological disorders such as cracking or knobs, and more tolerant to environmental stresses such as plant death by flooding and damages by frost or severe wind compared to "Dejima". Average yields of "Chugang" are 34.6 and 31.1 ton/ha at 90 days after planting in spring and autumn cropping, respectively. It is more resistant to common scab and less susceptible to late blight (phythophthora infestans) compared to "Dejima". However, it is susceptible to potato virus Y (PVY) and andean mosaic virus (AMV).

Lately, the autumn cropping areas of potato have been steadily increased to supply fresh potatoes all year round in Korea. Although "Dejima" is a main cultivar for autumn cropping, it is very susceptible to common scab (Streptomyces scabies) and show high frequency of physiological disorders such as knobs and cracking on tubers. "Chudong" was bred in 2002 for fresh table use from a cross between H83520-3 with short tuber dormancy and "Superior" with common scab resistance. It has attractive, round tuber shape with white skin and flesh colors. Its tuber dormant periods is 5 days longer than 65 days of "Dejima". Its average yields were 32.4 and 21.8 ton/ha at 90 days after planting in spring and autumn cropping of regional yield trials, respectively. It is more resistant to common scab and potato leaf roll virus and less susceptible to late blight (Phythophthora infestans) compared to "Dejima". However, it is susceptible to potato virus Y.

동경공업대학교의 3MV 펠레트론가속기를 사용하여 10에서 90keV 영역에 대하여 197 Au의 중성자포획 스펙트럼을 측정하였다. 중성자 펄스빔은 7Li(p,n)7 Be반응을 통하여 발생되었다. 사용되어진 양성자 빔 의 폭은 1.5-ns였다. 금 시료에 입사된 중성자의 에너지 스펙트럼은 6 Li-glass 섬광검출기의 중성자 비행 시간법을 사용하여 측정하였다. 금 시료의 중성자포획에 의해서 발생된 감마선은 anti-Compton NaI(TI) 검출장비를 사용하여 측정되었다. 본 연구에서는 5개의 중성자 에너지 역영을 선택했고, 각각의 에너지 영역에서 얻어진 감마선파고스펙트럼을 표시하였다. 본 연구에서 얻어진 스펙트럼은 처음으로 얻어진 결과이며, 중성자 결합에너지부근에 몇 개의 천이 피크가 보인다.

We study on the dynamic interaction with a simulated physical-biological coupled model response to nutrient reduction scenario in Jinhae Bay. According to the low relative errors, high regression coefficients of COD and DIN, and realistic distribution in comparison to the observation, our coupled model could be applicable for assessing the marine ecosystem response to nutrient input reduction in Jinhae Bay. Due to the new construction and expansion of sewage treatment plant from our government, we reduce 50% nutrient inputs near Masan Bay and sewage treatment plant. COD achieves Level Ⅱ in Korea standard of the water quality from the middle of the Masan Bay to all around Jinhae Bay except the inner Masan Bay remaining at Level Ⅲ. When our experiment reduces 50% nutrient inputs near Masan Bay and Dukdong sewage treatment plant simultaneously, COD decreases to about 0.1-1.2 mg/L (128°30’~128°40’ E , 35°05’~35°11’ N). The COD from the middle of the Masan Bay to Jinhae Bay achieves Level Ⅱ.