Safety in the nuclear facility has been a growing interest due to recent recurrences of the fatal accidents such as Fukushima accident and Chernobyl accident. It is not easy to determine the extent to what technical requirements of nuclear facility such as nuclear power plant are be likely applicable to the laboratory for use of nuclear material. All of workers in nuclear shall be recognized for the generic features of safety according to the related laws. This study surveys a status of safety control laws to enhance safety in laboratory for use of nuclear material.

JF33-01은 5.8 cm, JF33-02는 6.2 cm로 JF33-02가 더 빠른 생장을 보였으며, 배양과정중 균사가 황변이 되면서 약간의 균막을 형성하는 것을 확인할 수 있었다. 발효참나무, 밤나무, 버드나무에서는 거의 유사하게 나타났으나, 발효미송에서는 JF33-02가 JF33-01보다 2.5 cm정도 더 빠르게 나타났다.JF33-01(n)와 JF33-02(2n)를 대치배양 시킨 결과 뚜렷한 대치선을 형성하는 것을 확인하였다. 이는 두 균주간에 유의성이 있는 것으로 사료된다. 참바늘버섯 추출물의 제작시 버섯 세포의 파쇄와 관련된 방법의 개선이 필요하며, 본 실험을 통해 참바늘버섯 내에 혈전 분해능을 갖는 효소가 함유되어 있음을 확인하였다. 참바늘버섯의 혈전용해능은 약 30~40mM NaCl 에서 회수한 fraction(fraction 13) 에서 가장 높은 혈전용해능을 확인하였다. 참바늘_EtOAc의 경우 다른 버섯과는 매우 다른 크로마토그램을 보여주고 있어 신규물질에 대한 기대감을 높이고 있다. 또한 일반적으로 ACN/H2O 이동상의 경우가 MeOH/H2O 이동상의 경우보다 약간 더 복잡하고 피크 형태와 sharp한 크로마토그램으로 나타나 버섯에 함유한 물질들이 ACN/H2O의 이동상에서 더 잘 분리되는 것으로 보인다.

The studied results of the gasohol, which is the mixture of gasoline and ethanol, were investigated for the promotion of applications on commercially by gasoline vehicle referring to octane number, minimum water contents be involved, and separation inhibitors for protecting phase separation etc. especially for the E10 and E20. The results showed that octane number will be revised by higher value as the ethanol is added more, and it's more effect in case of be added as a mixture than individually when inhibition agents is added for the inhibition of separation. and it's reasonable for the water contents of less than 1% by comparing with experimental results and in view of regulations of various countries.

A lipase inhibitor from Desmodium oxyphyllum DC. was purified by methanol extraction, systematic solvent extraction, silica gel column chromatography, C18 solid phase extraction chromatography and RP-HPLC. We obtained the purified lipase inhibitor with 182 ng(IC50) of lipase inhibitory activity for a 0.06% yield. Its molecular weight was estimated to be 655.37 Da from an instrumental analysis of MALDI-TOF-MS and it was identified copper-3, 5-dibromo-2-hydroxybenzoic acid (C14H8Br4CuO6) by 1H, 13C NMR analysis.

갈대의 성숙종자로부터 최적 조직배양조건을 확립하기 위하여 종자로부터 캘러스 유도 및 식물체 재분화 체계를 확립하였다. 종자로부터 캘러스 유도시 첨가되는 auxin으로는 2,4-D가 가장 효율적이었으며, 1.0 mg/L 2,4-D와 0.5 mg/L BA가 첨가된 MS 배지에서 가장 높은 빈도로 캘러스가 유도되었다. 캘러스로부터 식물체 재분화는 cytokinin류인 BA와 kinetin이 첨가되지 않은 MS 배지에서 59.6%로 높은 재분화 효율을 나타내었

This study aims to provide preliminary review for standardization of methods for evaluating reduction performance of pollution-reducing building materials and to select commercially available pollution-reducing building materials for assessing their current status. The ISO 16000-23 and -24 standards were used as references for standardizing the test methods. The sub test categories—stability of the supply air concentration, type of the supply air, and supply air concentration—which were not included in the standards were selected and conducted for the purpose of this study. Five (5) wall materials and 2 ceiling materials were tested for formaldehyde reduction performance and 3 wall materials were tested for toluene reduction performance. The study included experimental review of the essential test criteria such as stability of the supply air, internal stability of the chamber, and recovery rate. The samples tested exhibited some reduction performance for formaldehyde but little reduction performance for toluene.

본 연구는 낙동강 하구역의 사주지형 변화를 예측하기 위한 기초적 연구로서 하천유량의 변화에 따른 부유사의 물질수지에 대하여 검토하였다. 낙동강 하구역의 부유사 물질수지는 갈수기시 60,708 kg/day가 유입하고, 홍수기는 306,892 kg/day가 외해를 통하여 유출하는 것으로 산정되었다. 낙동강 하구역은 전반적으로 갈수기 및 평수기에 부유사의 유입, 홍수기에 부유사의 유출이 반복 되지만, 사주지형 주변에서는 부유사의 유입과 유출 거동이 복잡하게 나타나 장기 지형변동 모니터링이 필요한 것으로 나타났다.

Bacillus thuringiensis (Bt) is a bacterial biopesticide against insect pests, mainly lepidopterans. Spodoptera exigua and Plutella xylostella exhibit significant decreases in Bt susceptibility in late larval instars. To enhance Bt pathogenicity, we used a mixture treatment of Bt and other bacterial metabolites which possessed significant immunosuppressive activities. Mixtures of Bt with culture broths of Xenorhabdus nematophila (Xn) or Photorhabdus temperata ssp. temperata (Ptt) significantly enhanced the Bt pathogenicity against late larval instars. Different ratios of Bt to bacterial culture broth had significant pathogenicities against last instar P. xylostella and S. exigua. Five compounds identified from the bacterial culture broth also enhanced Bt pathogenicity. After determining the optimal ratios, the mixture was applied to cabbage infested by late ins tar P. xylostella or S. exigua in greenhouse conditions. A mixture of Bt and Xn culture broth killed 100% of both insect pests when it was sprayed twice, while Bt alone killed less than 80% or 60% of P. xylostella and S. exigua, respectively. Other Bt mixtures, including Ptt culture broth or bacterial metabolites, also significantly increased pathogenicity in the semi-field assays. These results demonstrated that the Bt mixtures collectively names 'Bt-Plus' can be developed into potent biopesticides to increase the efficacy of Bt.

Odors were produced in the reactor where contained the swine excreta sampled from the pigery and were analyzed the major odor materials based on the odor contribution index. The container hoggery where six pens were separated was set up in S-myun, Gyeonggi-do, Korea: one was control group, the other were experimental group. Sixty weaners were raised and their excreta were sampled every week to the test of the effect of feed type probiotics. Some probiotics showed very effective deodorizing activity during the whole experimental periods. All products had positive effects on the reducing odor intensities after 4 to 5 week periods. The odor contribution analysis represented the main odor compounds were trimethylamine and volatile sulfur compounds such as hydrogen sulfide, mercaptane, and dimethyl sulfide.

Though food safety efforts of the government has been increasing, but the health hazards resulting from food does not stop and thus increases consumers' anxiety and distrust of government. For more reliable safety management, developing analysis and intake measurement methods and strengthening regulatory control with strict criteria is necessary. In addition, as not only the known hazards by now, but also unknown but obvious hazards are simultaneously ongoing in current environments, the unified risk management and health assessment for food, health food and medicines from the media is critical. As risks and damage to health may show up after a long time after exposure,preventive measures and strategies for safety control is also needed.