• Korean journal of applied entomology
• /
• v.48 no.2
• /
• pp.189-195
• /
• 2009

This study was performed to investigate the emergence timing and daily emergence from the different tree species logs (Korean white pine, Pine, and Japanese larch) at Cheongwon, Chungcheongbuk-do from 2006 to 2008. Pine sawyer adults began to emerge on early May (2${\sim}$10th day) and finished on mid-June (4${\sim}$20th day) in the Korean white pine and pine logs. However, pine sawyer adults began to emerge on mid-May (13th day) and finished late May (27th day) in Japanese larch logs, Japanese larch logs shows shorter emergence timing of pine sawyer adult compare to those of other two tree species. Emergence timing shows no difference between males and females. Sex ratios of emerged adult in 2007 were 0.55 from Korean white pine, 0.46 from Pine, and 0.59 from Japanese larch; it shows no difference among tree species. Female and male adults emerged throughout 24 hrs; 22.8% of the total adults emerged from 12${\sim}$14:00 (22.8%) and adults emerged lowest from 06${\sim}$08:00. Of the adults emerged from the logs, 98.9% was univoltine and the rest was biennial which emerged next year.

• The Korean Journal of Pesticide Science
• /
• v.11 no.3
• /
• pp.171-178
• /
• 2007

Esterase isozymes were extracted from final instar larvae of M. saltuarius treated with selective diets and inhibitors. Twenty esterase isozymes were separated on 12% native-PAGE gel and stained with three different substrates(${\alpha}$-naphthyl acetate, ${\beta}$-naphthyl acetate, or ${\alpha}$-naphthyl butyrate). Interestingly, the isozymes of Est7(${\alpha}$-naphthyl acetate and ${\alpha}$-naphthyl butyrate) and Est6(${\beta}$-naphthyl acetate) were specifically activated in final instar larvae fed with the bark of Pinus koraiensis. However, we could not find any band from substrate ${\beta}$-naphthyl stearate. The esterase activities of Est3, Est6, and Est7 were inhibited by organophosphate and carbamate insecticides. In addition, The esterase activities of Est4, Est6, and Est7 were also inhibited by eserine. However, inhibition of esterase activities in methoprene, bornyl acetate, linal, cineol, and citral was not observed. However, It is necessary to reconfirm these results in vivo.

• Journal of Life Science
• /
• v.26 no.7
• /
• pp.749-757
• /
• 2016

This study was carried out to reveal the genetic population structure of the Jeju Island population and the phylogenetic relationship of East Asian populations of the large-footed bat (Myotis macrodactylus) based on the genetic polymorphisms of mitochondrial cytochrome B (CYTB) and NADH dehydrogenase subunit 1 (ND1) gene sequences. A total of fourteen and nine haplotypes were found in the CYTB and ND1 sequences from East Asian bats, respectively. Haplotype distribution showed locality specific patterns. The results from ND1 haplotype analysis showed that the Jeju Island population has four haplotypes: the Mt. Halla and Western subpopulations have three ND1 haplotypes, but the Eastern subpopulation has just a single haplotype Nd03, which is commonly found on this island. The neighbor-joining (NJ) tree showed the closer relationship between Jeju Island and Japan rather than that between Jeju and Gangwon-do Province. The divergence time between the maternal ancestor lineages of Japanese and Chinese populations was estimated to be 0.789±0.063 MYBP. The secondary divergence between Jeju and Japanese bats was calculated about to be 0.168±0.013 MYBP. The Jeju population has immigrated to the island at least fifty thousand years ago. In addition, ND1 haplotype analysis suggested that the insular bats have experienced at least two further genetic differentiation events within this island. Consequently, these findings suggested that the results of this study may play a critical role in understanding the phylogenetic relationship among East Asian bat populations of M. macrodactylus. To prepare more explainable information on evolutionary correlation, analysis is still required to examine using expanded samples from China, Russia, and southern parts of the Korean Peninsula.

• Food Science and Preservation
• /
• v.17 no.5
• /
• pp.644-651
• /
• 2010

We prepared sikhe (CSE/BR-SH) using corn silk extract and black rice. The pH decreased during saccharification, from pH $5.88{\pm}0.03$ to pH $5.67{\pm}0.02$ after 6 h. However, the brix and reducing sugar contents increased during saccharification of CSE/BR-SH, with the highest levels ($7.6{\pm}0.05$ brix and $4.012{\pm}0.05$ g/l, respectively) being attained at 6 h. Amylase activity increased to 116.12% of control values 1 h after saccharification of CSE/BR-SH, and decreased thereafter. CSE/BR-SH was light purple in color. Soluble phenolic concentration increased markedly from an initial 8.43 g/l to 23.09 g/l at the end of saccharification (6 h), as did DPPH radical-scavenging activity (from an initial 17.3% to 70.98%), Increases were noted in all of ABTS radical-scavenging activity (from 40.25% to 75.32%), reducing power (from 0.241 to 0.682), and ferric reducing antioxidant power (FRAP) (from 0.288 to 1.071).

• The Journal of the Convergence on Culture Technology
• /
• v.8 no.1
• /
• pp.605-609
• /
• 2022

Shaving for adult men is one of the essential requirements for life. For physiological reasons, most adult men have beards, and if men trim their beards and take good care of them, their appearance becomes cleaner. If a dull blade is used for a wet razor, or if an appropriate massage is not used, skin irritation may occur, resulting in shaving wounds. Therefore, the convenience and comfort of the razor are required as much as the skin becomes smooth after shaving. In this paper, a pre-shaving method of sound massage was proposed to reduce the irritation of wet shaving on the skin and increase the convenience of shaving. It softens the skin or secretes oil through non-face-to-face low-frequency speakers to increase skin gloss, making shaving smooth and safe. We recorded the sound of the wet shave state to determine the skin condition before and after the wet shave, and objectively compared and analyzed the effect with this sound spectrum. In other words, it can be seen from the experimental results that the sound massage before shaving reduces the friction between the razor and the skin and the skin and beard by -7.0 dB, improving the skin wound of the wet shave and achieving a refreshing shave.

• Journal of Forest and Environmental Science
• /
• v.17 no.1
• /
• pp.116-121
• /
• 2001

The external morphologies of Sypnoides fumosa (Butler) and Scedopla koreana Sugi larvae of Ophiderinae were observed.

• 한국약용작물학회:학술대회논문집
• /
• 2009.05a
• /
• pp.391-392
• /
• 2009

• Proceedings of the Korean Society of Veterinary Pathology Conference
• /
• 2002.11a
• /
• pp.10-10
• /
• 2002

1. 질병명 : Neosporosis 2. 본 질병의 개요 역사 및 역학 : 1984년 노르웨이에서 부전마비로 폐사한 개를 검사하던 중 뇌척수염과 근염을 확인하고 T. gondii와 다른 새로운 원충성 질병을 최초로 보고한 이래 Dubey등이 미국에서 톡소플라즈마 감염으로 진단되었던 30두의 개조직에 대한 재검토를 실시하여 그 중 10 두는 새로운 원충성 질병으로 확인한 후 Neospora caninum을 명명하였다. 현재까지 본 원충은 개, 소, 염소, 말, 사슴 등에서 자연발생 예가 보고되었다. 특히 소에서는 유산의 한 주요한 원인체임이 한국을 비롯한 여러 나라에서 확인되었다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2003.05a
• /
• pp.78-79
• /
• 2003

새우조망어업은 일정한 구획(해역) 안에서 행하는 어업으로 2002년까지 전라남도 557건, 경상남도 316건의 허가 정수가 구획별로 설정되어 있다. 이와 같은 새우조망어업은 우리나라 연안에 서식하는 새우류에 대한 다양한 연구 결과에서 해역에 따라 서식하는 종과 체장이 다른 것을 보고하고 있지만, 수산자원보호령 6조에서는 지역에 따른 분포 특성과 생물학적 특성을 무시하고 망목 내경 15mm 이하의 것을 사용을 금지하고 있다. (중략)

• Animal Systematics, Evolution and Diversity
• /
• v.7 no.2
• /
• pp.221-224
• /
• 1991

Genus Mesoneura recorded for the first time from Korea and Mesoneura koreana, n.sp. is fully described and illustrated.