국립생물자원관에서는 ‘국가 생물자원 종합 인벤토리 구축 사업’의 일환으로 한국 분포 생물종의 실체를 확인하고 분류학적 정보 및 화상 자료를 포함한 표본 정보를 확보하여 database를 구축하는 ‘국가 생물종 확증표본 시스템 구축’을 수행하였다. 따라서 한국 분포 생물종에 대한 국내 소장 표본뿐만 아니라 외국에 반출되어 있는 표본까지도 광범위하게 조사해야 한다. 현 결과는 전체 생물 중 곤충강을 대상으로 한 결과에 대해 보고하고자 하였다. 2016년까지 국가 생물종 목록 기준 한국에 기록된 곤충종수는 16,993종이며, 이 중 10,693종(63%)에 대한 확증표본 정보를 확보하였다. 그러나 나머지 6,300종은 대부분 분류학적 난분류군이며, 희귀종이나 감소 추세종으로 추정되어 각 분류군 전문가의 분류학적 소견이 필요한 상황이다. 현재 국립생물자원관에서는 전 곤충종에 대한 확증표본 확보에 중점을 두고 있으며, 이에 대한 실체 및 정보 확보가 완성된다면 국가생물주권확보의 근간이 될 것으로 사료된다

Electromagnetic wave energies are consumed in the form of thermal energy, which is mainly caused by magnetic loss, dielectric loss and conductive loss. In this study, CNT was added to the nanocrystalline soft magnetic materials inducing a high magnetic loss, in order to improve the dielectric loss of the EM wave absorption sheet. Generally, the aspect ratio and the dispersion state of CNT can be changed by the pre-ball milling process, which affects the absorbing properties. After the various ball-milling processes, 1wt% of CNTs were mixed with the nanocrystalline base powder, and then further processed to make EM absorption sheets. As a result, the addition of CNT to Fe-based nanocrystalline materials improved the absorption properties. However, the increase of ball-milling time for more than 1h was not desirable for the powder mixture, because the ballmilling caused the shortening of CNT length and the agglomeration of the CNT flakes.

The electromagnetic wave absorption sheets were fabricated by mixing of nanocrystalline soft magnetic powder, charcoal powder and polymer based binder. The complex permittivity, complex permeability, and scattering parameter have been measured using a network analyzer in the frequency range of 10 MHz10 GHz. The results showed that complex permittivity of sheets was largely dependent on the frequency and the amount of charcoal powder : The permittivity was improved up to 100 MHz, however the value was decreased above 1 GHz. The power loss of electromagnetic wave absorption data showed almost the same tendency as the results of complex permittivity. However, the complex permeability was not largely affected by the frequency, and the values were decreased with the addition of charcoal powder. Based on the results, it can be summarized that the addition of charcoal powder was very effective to improve the EM wave absorption in the frequency range of 10 MHz1 GHz.

This study was conducted to distinguish adult morphology of the giant water bug (Lethocerus deyrollei) between over-wintered (OLD) and new-born (NEW) populations using materials collected from Gyodong island in Gyeonggi-do, Korea, as well as individuals reared in the laboratory (LAB population) as a control. As a result, no fundamental differences were found in external body structure between OLD, NEW, and LAB populations. However, marginal area of basal procoxa in ventral prothorax and jointed part of forefemur and foretibia were greatly worn in the OLD population. Mid-claws were shorter than 0.5 times the length of the 2nd mid-tarsus, the membranous margin of hemelytra was greatly worn, and hairs of the 5th abdominal tergum were greatly reduced in the OLD population.