Cambodia covers an area of 181,035 sq km, among them, forests cover 53 percent, so there are abundant Insect diversities. Collecting expeditions of Insect were conducted from towns of Osam (first base camp, N 12° 04' 51.7" E 103° 12' 30.5" alt. : 549m) and Roveang (second base camp N 12° 19' 06.5" E 103° 3' 03.8" alt. : 53m) in Pursat Province, western part of Cambodia. As protected forest from government, these areas were almost natural conservation field. Pitfall trap, sweeping method, light trap and searching etc. were used to collect insect. Specially in this expedition, large or big sized beetles, more than 5cm body length, for example, Lucanidae, Cerambycidae, Elateridae etc., mostly collected from light trap in deep forest. Materials are expected more than 100 species belonging to 20 families but it was difficult to identification because of lack of references of this areas. Maybe lots of new or new recorded species will found from Cambodia. Among Coleoptera species, with big sized beetles as the central figure, photos for species of dominant, rare, nominated species of new or new recorded were introduced, and also collecting sites and activities were presented.

게임 개발에 있어서 사용자와 게임간의 상호작용은 중요한 요인이다. 본 논문은 슈팅게임에서의 Leaderboard UI에 대해 고찰하고 Leaderboard UI의 유무 및 제공하는 빈도에 따른 사용자의 수행수준에 대하여 연구한다. 본 연구를 위해 3인칭 슈팅 게임을 개발하였으며 80명의 대학생을 대상으로 실험을 진행하였다. 실험결과에 대해 T-test 분석 기법을 활용하여 그 통계적 의미를 분석하였다. 최종적으로 사용자의 수행수준 향상을 위해서는 Leaderboard의 유무 및 제공 빈도보다는 사용자의 게임 경험이 더 큰 요인이며 유의미한 차이를 발생시킨다는 결론을 얻었다.

The spermatogenesis is the process by which spermatozoa are generated in the testes. The spermatozoa travel male reproductive tract during which they meet many substances secreted from reproductive organs. One of the substances is epididymal protease inhibitor (EPPIN) that is involved in the post-testicular maturation including capability of fertilizing the eggs. The expression of EPPIN gene was investigated in various tissues of sexually mature and regressed male Syrian hamsters by reverse transcription polymerase chain reaction (RT-PCR). The EPPIN gene was identified in the testis and epididymis of the male Syrian hamsters and compared to the genes reported previously. There was no expression of EPPIN gene in reproductively and completely regressed testes of Syrian hamster. These results suggest that the expressions of the EPPIN gene are associated with the reproductive capability in the Syrian hamsters.

버들송이의 기존품종의 단점을 보완하고 품종 다양화를 위해 단포자 교잡에 의해 육성된 ‘상강’의 주요 특성은 다음과 같다. 균사 생장적온은 26~28℃, 버섯 발생 및 생육온도는 18~20℃이며, 미송톱밥+밀기울+쌀겨+건비지(70:10:10:10, v/v) 배지에서 병재배 시, 배양온도 22~23℃에서 배양일수는 38일, 발이 및 생육온도 18~20℃에서 발이일수는 7일, 자실체생육일수는 5일로, 재배일수는 50일이 되어 ‘미황’과 같았다. 자실체는 개체

버들송이의 기존품종의 단점을 보완하고 품종 다양화를 위해, 단포자 교잡에 의해 육성된 ‘참’의 주요특성은 다음과 같다. 균사 생장적온은 26~28℃로 ‘버들송이1호’보다 다소 높았고 버섯발생 및 생육온도는 18~20℃로 ‘버들송이1호’와 같았으며, 톱밥+밀기울+미강+건비지(70:10:10:10, v/v)배지에서 재배 시, 배양온도 22~23℃에서 배양일수는 38일 내외, 생육온도 18~20℃에서 발이 일수는 7일, 자실체 생육일수는 5일로, 재배일수는

‘Gwangan’ is a new six-rowed covered barley cultivar developed by the National Institute of Crop Science (NICS), R.D.A in 2004. This cultivar is developed from a cross between “Mirak” and ‘Milyang59’ in 1995. An F6 selection was made at Milyang in 2001 an

N fertilizer required by rice could be reduced greatly in the rice-barley double cropping system than in the rice single cropping system. This study was conducted to investigate how much of the N fertilizer during the early stage of rice in the rice-barley double cropping system, could be saved compared to that in the rice single cropping system. This experiment was carried out at the paddy field of the National Crop Experiment Station in Suwon, Korea during three years from 1999 to 2001. Amounts of soil mineral nitrogen (SMN) and SPAD values of rice leaf during rice growing season in the rice-barley double cropping system were higher than those in the rice single cropping system under the same amount of N application during two years. Yield and N uptakes of rice at harvesting time were also higher in the rice-barley double cropping system than in the rice single cropping system during two years. Yield and N uptake of rice in the rice single cropping system were decreased when basal N fertilizer was omitted, but those reductions were not found by either omitting basal N fertilizer or omitting N fertilizer at tillering stage in the rice-barley double cropping system during 2000 and 2001. But yield and N uptakes of rice were decreased by 70 kg/10a and 2kgN/10a by the omission of both N application at basal and tillering stages in the rice-barley double cropping system in 2002. It was concluded that N fertilizer as much as tillering N fertilizer could be saved in the rice-barley double cropping system.

For the stable production of high quality tea, the freezing resistance is a very important character. Most of the farmers have planted out-pollinated seeds that are not genetically pure. So, with small sample, a quick and simple method is required to test freezing resistance of lots of germ-plasm and early generation of hybrids. The absorbances(A530 nm) of TTC reduction solution at -5~circC were positively correlated with resistance to photoinhibition of PSII in 6 hour photoinhibitory treatments, being significantly fitted by simple linear regression (R2 =0.64** ). Chlorophyll fluorescence measured by Fv/Fm was found to be very useful in evaluating the relative levels of freezing resistance in tea.