Recently, hundreds thousands of CO1 barcodes have been produced in many insect groups however, relatively little is known in Hemiptera. In this study, we newly determine 1173 sequences for 374 species distributed among 190 genera and 33 families collected mostly from North America. Average age of the specimen was 12.2 years and about 70% of the specimens produce barcode over 500 bp among examined 1700 specimens. Con-generic divergency calculated by K2P distance was 9.99 which was 11fold higher than the mean intraspecific variation. A steady increase of genetic variation through increasing taxonomic levels was also observed. We found several taxon groups with deep divergency (over 2.0 K2P distance) which were morphologically identified as a same species. Some mixed clusters with several species were also found and suggested more detailed study for these clusters through both morphological and molecular biological method.

We studied formation of nanostructured -Cu composites under shock wave conditions. We investigated the influence of preliminary mechanical activation (MA) of Ti-B-Cu powder mixtures on the peculiarities of the reaction between Ti and B under shock wave. In the MA-ed mixture the reaction proceeded completely while in the non-activated mixture the reagents remained along with the product . titanium diboride. The size of titanium diboride particles in the central part of the compact was 100-300 nm.

Metal/diamond binary composite coatings on Al substrate without grit blasting were deposited by cold spray process with insitu powder preheating. Microstructural characterization of the as-sprayed coatings with different diamond size, strength and with/without Ti coating on diamond was carried out by OM and SEM. The assessment of basic properties such as tensile bond strength and hardness of the coatings, and the deposition efficiency was also carried out. Particular attention on the composite coatings was on the diamond fracture phenomenon during the cold spray deposition and the interface bonding between the diamond and the Fe-based metal matrix.

본 연구는 체내, 체외 소 배반포기 배의 GMP vitrification 후 활력도의 비교와 한우 수정란을 몽골 소에 수정란이식 후 산자생산 가능성을 조사하고자 실시하였다. 한우 수정란은 체외수정란 또는 과배란처리에 의한 체내수정란을 생산하여 GMP vitrification 방법으로 동결 후 몽고로 수송하였다. 수란우는 CIDR과 처리에 의하여 동기화를 유도하였다 체내수정란생산을 위하여 7두를 과배란처리하였다. 총 64개의 배반포기를 회수하였다. (pe