• Title/Summary/Keyword: affairs state

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Electrochemical Investigation of Tryptophan at a Poly(p-aminobenzene sulfonic acid) Film Modified Glassy Carbon Electrode

  • Ya, Yu;Luo, Dengbai;Zhan, Guoqin;Li, Chunya
    • Bulletin of the Korean Chemical Society
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    • v.29 no.5
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    • pp.928-932
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    • 2008

  • A glassy carbon electrode (GCE) modified with poly(p-aminobenzene sulfonic acid) [Poly(p-ABSA)] film is fabricated by voltammetric technique in phosphate buffer solution (pH 8.0) containing $5.0\;{\times}\;10^{-3}\;mol\;L^{-1}$p- ABSA. Electrochemical behaviors of tryptophan at the Poly(p-ABSA) film electrode are investigated with voltammetry. The results indicate that the electrochemical response of tryptophan is improved significantly in the presence of poly(p-ABSA) film. Compared with the bare glassy carbon electrode, the Poly(p-ABSA) film electrode remarkably enhances the irreversible oxidation peak current of tryptophan. Some parameters such as voltammetric sweeping segments for the electrochemical polymerization, pH, accumulation potential and accumulation time are optimized. Under the optimal conditions, the oxidation peak current is proportional to tryptophan concentration in the range of $1.0\;{\times}\;10^{-7}$ to $1.0\;{\times}\;10^{-6}\;mol\;L^{-1}$, and $2.0\;{\times}\;10^{-6}$ to $1.0\;{\times}\;10^{-5}\;mol\;L^{-1}$ with a detection limit of $7.0\;{\times}\;10^{-8}\;mol\;L^{-1}$. The proposed procedure is successfully applied to the determination of tryptophan in a commercial amino acid oral solution.

  • https://doi.org/10.5012/bkcs.2008.29.5.928 인용 PDF KSCI

Impact of Military Actions on the EU Labor Market

  • Kopytko, Marta;Franchuk, Vasyl;Panchenko, Vladimir;Viunyk, Olha;Myshchyshyn, Olha
    • International Journal of Computer Science & Network Security
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    • v.22 no.5
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    • pp.25-30
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    • 2022

  • The main purpose of the study is to analyze the main aspects of the impact of military actions on the EU labor market. The research methodology includes modern theoretical methods and methods for analyzing the state of the EU labor market. The war in Ukraine changed not only the economy of one country, but the whole continent. The European Union has very sensitively felt the changes brought about by the military actions on the territory of Ukraine. Military actions on the territory of Ukraine are a destructive factor in the labor market. Today, the main task of economic recovery is to minimize the consequences of humanitarian problems and preserve human potential, which is an important source of business activity. Based on the results of the study, we have identified key aspects of the impact of military actions on the EU labor market.

  • https://doi.org/10.22937/IJCSNS.2022.22.5.5 인용 PDF KSCI

Information Security and Its Aapplications on the Portal of the Deanship of Library Affairs at Northern Border University

  • Al Eawy, Yaser Mohammad Mohammad
    • International Journal of Computer Science & Network Security
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    • v.21 no.12
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    • pp.183-188
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    • 2021

  • The study aimed to assess the state of electronic security for the website of the Deanship of Library Affairs at Northern Border University, as one of the university's electronic portals, which provides distinguished knowledge services to faculty members, through the Saudi Digital Library, and the integrated automated system for libraries (Symphony) with the definition of cyber security of the university, and the most important threats The study sought to analyze the opinions of a wide sample of faculty members, towards evaluating the state of electronic security for the Deanship of Library Affairs portal, through the use of both the analytical method, as well as the survey, using the questionnaire tool, and the study sample consisted of 95 A faculty member of all academic categories and degrees, and university faculties, and the study concluded that it is necessary to work to overcome the relative slowness of the university's Internet, with the faculty members notifying the information security services through e-mail and SMS service, with the continuous updating of operating systems, Apply and use the latest anti-spyware, hacking, and antivirus software at the university, while conducting extensive research studies towards information security services, and contracting It aims to introduce information security risks, and ways to combat and overcome them, and spread the culture of information security among faculty members.

  • https://doi.org/10.22937/IJCSNS.2021.21.12.26 인용 PDF KSCI