LC-MS/MS를 이용하여 신속하고 정밀한 카벤다짐 분석법을 연구하였다. 농산물 중 카벤다짐은 acetonitrile로 추 출한 후 SPE cartridge을 이용하여 전처리를 수행하였으며, 최소 검출한계 및 정량한계는 각각 0.001과 0.004 mg/kg 이었다. 농산물에 각각 1.0 mg/kg 및 0.02 mg/kg 농도의 카벤다짐을 첨가하여 분석 시 회수율과 정밀성은 각각 상추 가 84.9%, 1.0% 및 87.8%, 3.8% 얼갈이배추가 83.4%, 1.5% 및 86.8%, 2.7% 양배추가 86.4%, 2.0% 및 77.3%, 1.5% 근대가 83.3%, 0.2% 및 86.8%, 2.0 % 이었으며, 콩 나물은 85.9%, 3.0% 및 90.1%, 1.3%, 그리고 숙주나물이 83.3%, 2.0% 및 85.9%, 1.9% 로 조사되었다. 본 연구의 시험법은 식품공전의 다성분분석법에 비해 신속하고 정밀 한 분석법으로 농산물에 대한 카벤다짐 분석에 적합한 것으로 조사되었다.

Neodymium-iron-boron (Nd-Fe-B) sintered magnets have excellent magnetic properties such as the remanence, coercive force, and the maximum energy product compared to other hard magnetic materials. The coercive force of Nd-Fe-B sintered magnets is improved by the addition of heavy rare earth elements such as dysprosium and terbium instead of neodymium. Then, the magnetocrystalline anisotropy of Nd-Fe-B sintered magnets increases. However, additional elements have increased the production cost of Nd-Fe-B sintered magnets. Hence, a study on the control of the microstructure of Nd-Fe-B magnets is being conducted. As the coercive force of magnets improves, the grain size of the Nd2Fe14B grain is close to 300 nm because they are nucleation-type magnets. In this study, fine particles of Nd-Fe-B are prepared with various grinding energies in the pulverization process used for preparing sintered magnets, and the microstructure and magnetic properties of the magnets are investigated.

These experiments were conducted to get high production and quality of whole crop winter cereals, Oat, Wheat and Triticale, in the paddy field. These three whole crop winter cereals are got later harvest than whole crop barley, so there are more production of forage. Its harvest time was the end of May or the early of June in the south area of Korea. Mixed cultivations of Oat and Wheat (MCOW) was got more production over 15 percents in the dry wight, and then contents of crude protein (CP) in MCOW were higher than single cultivation of Oat. And Relative feed values (RFV) of MCOW were higher than single cultivation of Oat. Mixed cultivations of Oat and Triticale (MCOT) were got more production over 7 percents in the dry wight than single cultivations of Oat, but contents of CP in MCOT were not changed in all plots. And RFVs of MCOT were higher than single cultivations of Oat.

These experiments was carried out to get high quality of forage to cultivate mixed barley and winter pea with different seeding rates, 200 and 140 kg/ha in barley, and seeding rates in winter pea were 0, 50 and 100 kg/ha. And these were tested in Iksan from 2006 to 2007 for two years. The results were followed. Dry weight in only barley seeding of 200 kg/ha was 0.9 ton/ha higher than only barley seeding of 140 kg/ha. Fresh and dry weight in barley seeding of 200 kg/ha and mixed winter pea were each 1.4, 0.7 ton/ha higher than barley seeding of 140 kg/ha and mixed winter pea. And crude protein in barley seeding of 200 kg/ha and mixed winter pea was from 0.3 to 0.8 %, and 140 kg/ha and mixed winter pea was from 1 to 1.6 %. The rates of fresh and dry weight to all yield in winter pea were each from 8 to 15, from 4 to 21 % in barley seeding of 200 kg/ha and mixed winter pea, and were from 9 to 20, from 5 to 26 % in barley seeding of 140 kg/ha and mixed winter pea.