• Title/Summary/Keyword: cockroach

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Biogeography and Distribution Pattern of a Korean Wood-eating Cockroach Species, Cryptocercus kyebangensis, Based on Genetic Network Analysis and DNA Sequence Information

  • Park, Yung-Chul;Choe, Jae-Chun
    • Journal of Ecology and Environment
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    • v.30 no.4
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    • pp.331-340
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    • 2007

  • We examined the evolutionary and ecological processes shaping current geographical distributions of a Korean wood-eating cockroach species, Cryptocercus kyebangensis. Our research aims were to understand evolutionary pattern of DNA sequences, to construct genetic network of Cryptocercus kyebangensis local populations and to understand evolutionary and ecological processes shaping their current geographical distribution patterns via DNA sequence information and genetic networks, using sequence data of two genes (ITS-2 and AT region) from local populations of C. kyebangensis. The results suggest that the ITS-2 and AT region are appropriate molecular markers for elucidating C. kyebangensis geographic patterns at the population level. The MSN-A based on the ITS-2 showed two possible routes, the Hwaak-san and Myeongji-san route and the Seorak-san and Gyebang-san route, for migration of ancestral C. kyebangensis into South Korea. The MSNs (MSN-A and -B) elucidate migration routes well within South Korea, especially the route of Group I and Group II.

  • https://doi.org/10.5141/JEFB.2007.30.4.331 인용 PDF KSCI

Can animals too negotiate nano transformations?

  • Jha, Anal K.;Prasad, K.
    • Advances in nano research
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    • v.1 no.1
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    • pp.35-42
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    • 2013

  • Cockroach (Periplaneta americana) broth has been employed to assess its potential as a candidate source animal tissue for the synthesis of gold nanoparticles. The synthesis is performed akin to room temperature in the laboratory ambience. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of nanoparticles. The synthesis of nanoparticles might have resulted due to the activity of chitin, metallothioneine and tropomyosin. A possible involved mechanism for the biosynthesis of nanoparticles has also been proposed. This work further indicates that the animal wastes too can effectively participate in nano-transformations thereby helping in controlling the environmental pollution and subsequently the different diseases.

  • https://doi.org/10.12989/anr.2013.1.1.035 인용

EFFICIENT OPEN SOURCE DISTRIBUTED ERP SYSTEM FOR LARGE SCALE ENTERPRISE

  • ELMASSRY, MOHAMED;AL-AHAMADI, SAAD
    • International Journal of Computer Science & Network Security
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    • v.21 no.12
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    • pp.280-292
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    • 2021

  • Enterprise Resource Planning (ERP) is a software that manages and automate the internal processes of an organization. Process speed and quality can be increased, and cost reduced by process automation. Odoo is an open source ERP platform including more than 15000 apps. ERP systems such as Odoo are all-in-one management systems. Odoo can be suitable for small and medium organizations, but duo to efficiency limitations, Odoo is not suitable for the large ones. Furthermore, Odoo can be implemented on both local or public servers in which each has some advantages and disadvantages such as; the speed of internet, synced data or anywhere access. In many cases, there is a persistent need to have more than one synchronized Odoo instance in several physical places. We modified Odoo to support this kind of requirements and improve its efficiency by replacing its standard database with a distributed one, namely CockroachDB.

  • https://doi.org/10.22937/IJCSNS.2021.21.12.40 인용 PDF KSCI