This test is accomplished by one for performance evaluation of FRP which takes center stage for new material recently. generally, FRP is CFRP, AFRP, GFRP which are high tensile rebar and light material than steel reinforcement. Therefore, the research about the long-term performance assessment of FRP is needed. we performed fatigue test in this study as part of the test.

본 연구는 찰옥수수에 단맛을 가미하고자 이중열성인자(wxwxshsh)를 이용하여 찰초당옥수수 품종 육성을 위 하여 수행 되었다. 감미찰 옥수수는 최초의 단맛이 가미된 찰옥수수로 이삭내 립의 비율이 찰옥수수 대 초당 옥수수가 3 : 1로 혼합되어 있다. 감미찰 품종의 특성은 아밀로펙틴 함량은 94%, 과피두께 59㎛, 백립중은 27g, 종피색은 흰색, 자수색은 담자색이었다. 또 평균이삭중이 132g이며 10a당 이삭수는 5,833개였다. 채종시 험결과 모본인 Gwx2의 출사기와 부본인 Gdm1의 화분비산기가 일치하여 10a당 85kg의 채종이 가능하였다. 식미검정에서는 찰옥1호 보다 우수하였고 초당옥수수는 당 함량이 높아 어린이 노약자들에게, 찰옥수수는 청․장년층에게 기호성이 우수한 것으로 나타나 찰초당옥수수는 한국인 기호에 맞는 새로운 시도로 보여진다.

The aim of this work is to assess the safety of fungicide tolclofos-methyl, difenoconazole and azoxystrobin in ginseng sprayed by safe use guideline. When tolclofos-methyl was sprayed on ginseng by safe use guideline, the residue amounts (MRL) of it in ginseng was 0.13 mg/kg which is below than 0.3 mg/kg, maximum residue limit established by Korea Food & Drug Administration (KFDA). The residue amounts of ginseng parts, head part was 0.37 mg/kg and main body part was 0.13 mg/kg. In case of difenoconazole, the residue amounts in ginseng was 0.81 mg/kg. which was exceed the MRL, 0.2 mg/kg. By the analyze results of ginseng part, the residues of head and main body part were 3.01 and 0.40 mg/kg, respectively. In experiment of vinyl mulching, the residue amount of difenoconazole in ginseng was 0.05 mg/kg. The residue amounts of azoxystrobin in ginseng sprayed by safe use guideline was 0.14 mg/kg. This residue was not exceed the MRL 0.5 mg/kg. The residue amounts by ginseng parts was 0.51 mg/kg for head part and 0.28 mg/kg for main body part. In case of vinyl mulching, the residue amount of azoxystrobin was 0.02 mg/kg.

Aphids are generally considered as a major pest of corn. Thus, yield losses due to aphid infection can be considerable. Rhopalosiphum padi - the birdcherry oct aphid seems to be prevalent aphid species on maize in Korea. Aphid resistance of 91 Fls was assessed at two locations in Korea. In studies of combining ability for aphid resistance to different locations, GCA mean square was 4.48 times grater than that of SCA mean square. Thus, additive gene action was more important than that of non-additive gene action to aphid resistance. In two locations, inbreds 2, 4, 5 and 10 had negative GCA effects for aphid resistance.

본 연구는 한국시장에 저장중인 수출 돈육과 일본시장에 실제 수출이 완료되어 유통중인 한국산 진공포장 냉장돈육에 대한 위생성을 일본 후생성에서 요구하는 수입식육의 유통기한 기준안에 준해 조사하여 한국산 돈육의 위생성과 유통기한을 파악하고자 실시하였다. 공시시료는 비교적 오랜 기간 동안 일본에 냉장육을 공급해 주고 있는 4개 회사의 제품으로 우리 나라내 조사에서는 레귤러 등심과 뒷다리살을 이용하였으며, 일본 현지에서는 레귤러 등심만을 이용하였다. 국