• Title/Summary/Keyword: Chemical

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Improvement of Information Sharing System for Efficient Response of Chemical Accident (화학사고의 효율적 대응을 위한 정보공유체계 개선 연구)

  • Lee, Taehyung;Yun, Jeonghyeon;Heo, Hwajin;Lee, Yulburm;Yoo, Byungtae
    • Journal of the Korean Society of Safety
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    • v.33 no.1
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    • pp.54-61
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    • 2018
  • In this study, we developed a system for information sharing and cooperation support system among the accident response organizations to enable prompt and efficient response in responding to chemical accidents. In other words, by applying mobile messenger function, it is proposed to improve the chemical accident response system that provides information necessary for accident response promptly and accurately, and facilitates bi-directional communication between accident response organizations and field responders, thereby enabling efficient and organic response. As a result of comparing the information provision time before and after the chemical accident of chemical accident response information sharing system, the ratio of processing of substance information and chemical air diffusion information within 30 minutes was improved by 8% and 32%, respectively. As a result of this study, applying the chemical accident response information sharing system to the chemical accident response is expected to contribute to the improvement of the system and the ability to cope with the accident more effectively.

Protein Tyrosine Phosphatase 1B Inhibitors: Heterocyclic Carboxylic Acids

  • Cho, Sung-Yun;Ahn, Jin-Hee;Ha, Jae-Du;Kang, Seung-Kyu;Baek, Ji-Yoen;Han, Sang-Sub;Shin, Eun-Young;Kim, Sung-Soo;Kim, Kwang-Rok;Cheon, Hyae-Gyeong;Choi, Joong-Kwon
    • Bulletin of the Korean Chemical Society
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    • v.24 no.10
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    • pp.1455-1464
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    • 2003
  • Several series of compounds (benzoic acids, pyrazolecarboxylic acids, phenoxyacetic acids, and quinolinoxyacetic acids) were prepared and evaluated for their inhibitory activity against PTP-1B. Several compounds showed submicromolar inhibitory activity.

Development and Use of Data for Chemical Risk Assessment (화학물질 유해성 평가를 위한 정보의 작성 및 활용)

  • Rim, Kyung-Taek;Kim, Hyun-Ok;Kim, Young-Kyo;Cho, Hae-Won;Ma, Yong-Seok;Lee, Kwon-Seob;Lim, Cheol-Hong;Kim, Hyeon-Yeong;Yang, Jeong-Seon
    • Environmental Analysis Health and Toxicology
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    • v.22 no.1 s.56
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    • pp.91-101
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    • 2007
  • The new chemicals are developed and circulated without the verified toxicity data. So, the accidents and occupational diseases, such as explosion, fire, suffocation about deadly poisons etc. are frequently to workers. Classifications of chemicals suited with guideline and an offer of correct chemical information data are the molt important thing for the establishment of suitable chemical management system. The GHS (Globally Harmonized System of classification and labeling of chemicals) is based with the chemical classifications and unification plan. The warning symbol and phrases are established for improvements of chemical information data system. According to these unified and improved systematic form of data, and the chemical information data, the workplaces will be presented many chemical safety and risk data correctly. In this paper, we will present constructions and accomplishment contents-based chemical management of workplace through development of chemical information data and the nice using for new chemical investigation and risk assessment of chemicals in workplaces.

Improved performance of polyamide nanofiltration membranes by incorporating reduced glutathione during interfacial polymerization

  • Jiao, Zhiwei;Zhou, Linjie;Wu, Mengyuan;Gao, Kang;Su, Yanlei;Jiang, Zhongyi
    • Korean Journal of Chemical Engineering
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    • v.35 no.12
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    • pp.2487-2495
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    • 2018
  • Inspired by the specific amino acid sequence Asn-Pro-Ala (NPA) of water channel aquaporins (AQPs), we fabricated polyamide (PA) nanofiltration (NF) membranes by introducing reduced glutathione (GSH) in interfacial polymerization (IP) method. Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectrometry (XPS), scanning electron microscope (SEM), atomic force microscopy (AFM), zeta potential and static water contact angle measurement were employed to characterize the chemical composition, morphology, electronegativity and hydrophilicity of the NF membranes. The water flux of GSH/PIP-TMC NF membrane reached $32.00L\;m^{-2}h^{-1}$ at 0.2 MPa, which was approximately twice than that of pristine PIP-TMC NF membrane when the ratio of GHS to piperazidine (PIP) was 40% during IP process. More water channels were built as GSH was embedded into PA layer. The fabricated NF membranes also took on potent rejection for dyes and $Na_2SO_4$. This study presents a simple and facile method to simulate water channels-based biological materials which may find potential application in water treatment.