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Rahman, W. S. A.
- Utilization of a Hollow Copper Cathode Laser in Producing Polymers
Abstract Views :346 |
PDF Views:74
Authors
Affiliations
1 Institute of Laser
2 Institute of Laser, SD
3 Dept. of Chemistry, College of Science, Sudan University of Science & Technology, Sudan, SD
1 Institute of Laser
2 Institute of Laser, SD
3 Dept. of Chemistry, College of Science, Sudan University of Science & Technology, Sudan, SD
Source
Indian Journal of Science and Technology, Vol 2, No 5 (2009), Pagination: 9-12Abstract
A Pulsed, home- built, hollow copper cathode discharge laser (HCCL) in the visible region and 1.76 mj energy per pulse, was used to irradiate a monomer so as to produce polymer. Three different categories of samples were irradiated for different intervals of time: 30, 60 and 90 minutes. Infrared Spectrometry was carried for the samples before and after irradiation and the collected spectra were analyzed and discussed. The results showed that the polymerization process starts in a very short time (30min), which indicates the efficiency of this type of laser in such application.Keywords
Laser, Hollow Copper Cathode, PolymerizationFull Text
References
- Burnett CM (1954) Mechanism of polymer reactions. Wiley – Inter Science, New York.
- Elameer AE (2005) Production of polyacrylamide from monomer using He– Ne laser. MSc. Thesis, Laser Institute, Sudan University of Science and Technology.
- Fred W. and Bill Meyer (1971) Polymer science, Wiley inter- Sciences, John Wiley & Sons Inc., Second Edition, New York.
- James D. Ingle and J.S Crouch (1988) Spectrochemical Analysis, Prentice –Hall, Inc. First edition.
- John F. Ready (1997) Industrial application of lasers, Academic Press, Second edition.
- Malcolm P. Stevens (1984) Polymer chemistry. Basra University Press, Iraq.
- Zare RN et al. (1995) Laser experiments for beginners, University Science Books.
- Source Identification of Airborne Elements in Industrial Area by XRF Technique
Abstract Views :384 |
PDF Views:106
Authors
Affiliations
1 Omdurman Islamic University, Department of Astronomy & Meteorology, P.O.Box 832, Omudrman, SD
2 Sudan Atomic Energy Commission, Khartoum, SD
3 Sudan University of Science and Technology, P.O. Box 407, Khartoum, SD
4 Khartoum University, Faculty of Science, Chemistry Department, P.O. Box 32, Code: 11115, SD
1 Omdurman Islamic University, Department of Astronomy & Meteorology, P.O.Box 832, Omudrman, SD
2 Sudan Atomic Energy Commission, Khartoum, SD
3 Sudan University of Science and Technology, P.O. Box 407, Khartoum, SD
4 Khartoum University, Faculty of Science, Chemistry Department, P.O. Box 32, Code: 11115, SD
Source
Indian Journal of Science and Technology, Vol 4, No 7 (2011), Pagination: 824-827Abstract
In this work, X-ray fluorescence was applied to analyze aerosol samples collected from indoor and outdoor atmosphere Sudan Mint Company in Khartoum industrial area. The collected X-ray spectra were analyzed using AXIL program. The concentration of Calcium, Chromium, Iron, Cobalt, Nickel, Copper, Zinc, Bromine, and Lead were determined compared to the prepared standards. The accuracy of the results was crosschecked using Atomic Absorption Spectrometer. Various receptor models were used in aerosol source identification and apportionment. In this study, the Zinc and Copper showed highest concentration in the indoor and outdoor samples. The correlation between the elements showed that the elements were contributed by the same source. The principal factor and enrichment factor confirms the elements in industrial area aerosol are industrial emission and soil dispersion. The data can be used by occupational health department to assist in drafting policies on work places to control pollutants.Keywords
Aerosol, Pollution, Industrial, Atmosphere, Metal, SudanFull Text
References
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