ORIGINAL_ARTICLE
Comparison stability Rusticyanin 23270 wild-type and mutant His143Leu using molecular dynamics simulation
The Acidithiobacillus ferroxidans bacterium plays an important role in the bioleaching process of uranium. The rusticyanin protein is the second most crucial component in the electron transport chain in the membrane of the Acidithiobacillus ferroxidnas bacterium. This protein belongs to the large family of copper blue proteins. The protein sequence rusticyanin 23270 was derived from UniProtKB database. A suitable template for modeling was prepared from the Swiss model server, and the best protein model was made with Modeller software. The His143Leu mutation was developed using the Pymol software in the protein. The effect of the mutation on the stability of the protein structure was investigated by analysing the results of molecular dynamics simulation on the wild-type and mutant protein. The values RMSD and RMSF are the same for both wild-type and mutant. The amount of Rg in mutant protein is reduced. His143Leu mutation in the rusticyanin 23270 protein does not affect the secondary structure protein and slightly increases the folding and stability of the tertiary structure.
https://jonra.nstri.ir/article_1333_57262f66e5809ff9bdb5a1a2f0751134.pdf
2022-01-01
1
7
10.24200/jon.2022.1008
Rusticyanin
Acithiobacillus ferrooxidans 23270
Mutation His143Leu
Molecular dynamics simulation
R.
Jafarpour
1
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
AUTHOR
F.
Fatemi
ffatemi@aeoi.org.ir
2
Materials and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
LEAD_AUTHOR
M.
Dehghan Shasaltane
3
Department of Biology, Faculty of Sciences, University of Zanjan, Zanjan, Iran
AUTHOR
1. M. Vera, A. Schippers, and W. Sand, Progress in bioleaching: fundamentals and mechanisms of bacterial metal sulfide oxidation—part A, Appl. Microbiol. Biotechnol. 97(17), 7529 (2013).
1
2. LR. Croal, et al, The genetics of geochemistry, Annu. Rev. Genet. 38, 175 (2004).
2
3. A. Elbehti, G. Brasseur, and D. Lemesle-Meunier, First evidence for existence of an uphill electron transfer through the bc 1 and NADH-Q oxidoreductase complexes of the acidophilic obligate chemolithotrophic ferrous ion-oxidizing bacterium Thiobacillus ferrooxidans, J. Bacteriol. 182(12), 3602 (2000).
3
4. C. Appia-Ayme, et al, Characterization of an operon encoding two c-type cytochromes, an aa3-type cytochrome oxidase, and rusticyanin in Thiobacillus ferrooxidans ATCC 33020, Appl. Environ. Microbiol. 65(11), 4781 (1999).
4
5. A. Yarzábal, et al, The high-molecular-weight cytochrome c Cyc2 of Acidithiobacillus ferrooxidans is an outer membrane protein, J. Bacteriol. 184(1), 313 (2002).
5
6. JA. Baranska, and Z. Sadowski, Bioleaching of uranium minerals and biosynthesis of UO2 nanoparticles, Physicochem. Probl. Miner. Process. 49(1), 73 (2013).
6
7. J. Willner, and A. Fornalczyk, Extraction of metals from electronic waste by bacterial leaching, Environ. Prot. Eng. 39(1), 197 (2013).
7
8. M. Ronk, et al, Amino acid sequence of the blue copper protein rusticyanin from Thiobacillus ferrooxidans, Biochemistry. 30(39), 9435 (1991).
8
9. JF. Hall, et al, Role of the axial ligand in type 1 Cu centers studied by point mutations of Met148 in rusticyanin, Biochemistry. 38(39), 12675 (1999).
9
10. A. Yarzabal, et al, Regulation of the expression of the Acidithiobacillus ferrooxidans rus operon encoding two cytochromes c, a cytochrome oxidase and rusticyanin, Microbiology. 150(7), 2113 (2004).
10
11. C. Castelle, et al, A new iron-oxidizing/O2-reducing supercomplex spanning both inner and outer membranes, isolated from the extreme acidophile Acidithiobacillus ferrooxidans, J. Biol. Chem. 283(38), 25803 (2008).
11
12. MV. Botuyan, et al, NMR Solution Structure of Cu (I) Rusticyanin fromThiobacillus ferrooxidans: Structural Basis for the Extreme Acid Stability and Redox Potential, J. Mol. Biol. 263(5), 752 (1996).
12
13. I. Harvey, et al, Structure determination of a 16.8 kDa copper protein at 2.1 Å resolution using anomalous scattering data with direct methods, Acta. Crystallogr. Sect. D: Biol Crystallogr. 54(4), 629 (1998).
13
14. R. L. Walter, et al, Multiple wavelength anomalous diffraction (MAD) crystal structure of rusticyanin: a highly oxidizing cupredoxin with extreme acid stability, J. Mol. Biol. 263(5), 730 (1996).
14
15. ML. Barrett, et al, Atomic resolution crystal structures, EXAFS, and quantum chemical studies of rusticyanin and its two mutants provide insight into its unusual properties, Biochemistry. 45(9), 2927 (2006).
15
16. MT. Giudici-Orticoni, et al, Interaction-induced redox switch in the electron transfer complex rusticyanin-cytochrome c 4, J. Biol. Chem. 274(43), 30365 (1999).
16
ORIGINAL_ARTICLE
Mechanical properties of 316L stainless steel samples fabricated by selective laser melting and comparison with other manufacturing methods
Selective laser melting (SLM) is an additive manufacturing technique in which a laser beam with a high energy density is used to melt a metal powder substrate. Although this technique has several advantages, including the possibility of fabricating complex metal components quickly, there are concerns about the mechanical properties of the parts produced by the SLM method. This is study aims to ensure the achievement of acceptable mechanical properties including yield stress, tensile strength, and elongation percentage compared to conventional manufacturing methods. For this purpose, samples of 316L stainless steel were printed using the SLM machine. These samples and samples of annealed 316L bar were tested under same conditions and by the same equipment. Despite the large differences in microscopic structure, no significant differences were observed in mechanical properties. Also, the obtained results were compared with the results related to the sample made by the DLD additive manufacturing method, which is similar to SLM in terms of energy source and raw materials. The result represents that the mechanical strength and microhardness of the sample produced by the SLM technique are higher than the other samples, and the elongation percentage is within the desirable range. The yield stress, tensile strength, and elongation are respectively 595Mpa, 696Mpa, and 34.5%, all of which are within the acceptable range required by the standards for such samples. The investigation of the microstructure shows a complete austenitic cellular structure without considerable solidification defects. Overall, the SLM additive manufacturing is a reliable process to produce 316L stainless steel parts in terms of mechanical properties.
https://jonra.nstri.ir/article_1334_9f79b1d1f8b8c567746307e302a0b53f.pdf
2022-01-01
8
17
10.24200/jon.2022.1009
Additive manufacturing
Selective laser melting (SLM)
316L Stainless steel
A
Sazgar
asazgar@aeoi.org.ir
1
Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O. Box: 11365-8486, Tehran – Iran.
LEAD_AUTHOR
V.
Gholizadeh
2
Researcher of AEOI, Tehran – Iran
AUTHOR
J.
Sherafati
3
Researcher of AEOI, Tehran – Iran
AUTHOR
1. B. Zhang, Y. Li and Q. Bai, Defect Formation Mechanisms in Selective Laser Melting: A Review, Chin. J. Mech. Eng. 30: pp. 515–527, (2017).
1
2. T.S. Srivatsan, T.S. Sudarshan, Additive MAnufActuring Innovations, Advances, and Applications, Taylor and Francis group, 2016
2
3. L. Thijs et al. A study of the microstructural evolution during selective laser melting of Ti–6Al–4V, Acta Materialia. 58: pp. 3303–3312, (2010).
3
4. H. Khalid Rafi, Thomas L. Starr and Brent E. Stucker, A comparison of the tensile, fatigue, and fracture behavior of Ti–6Al–4V and 15-5 PH stainless steel parts made by selective laser melting, Int J Adv Manuf Technol. 69: pp. 1299-1309, (2013).
4
5. Luke N. Carter, Moataz M. Attallah and Roger C. Reed, Laser powder bed fabrication of nickel-base superalloys: influence of parameters; characterisation, quantification and mitigation of cracking, In 12th International Symposium on Superalloys, Pennsylvania, (USA, 2012).
5
6. Q. Jia, D. Gu, Selective laser melting additive manufacturing of Inconel 718 superalloy parts: Densification, microstructure and properties, Journal of Alloys and Compounds. 585: pp. 713–721, (2014).
6
7. Jiang Bi et al. Densification, microstructure and mechanical properties of an Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy printed by selective laser melting, Materials Science & Engineering A, 774: pp. 138931, (2020).
7
8. Pei Wanga et al. Microstructure and mechanical properties of a heat-treatable Al-3.5Cu-1.5Mg-1Si alloy produced by selective laser melting, Materials Science & Engineering A, 711: pp. 562–570, (2018).
8
9. P.Wang et al. Microstructure and mechanical properties of Al-Cu alloys fabricated by selective laser melting of powder mixtures, Journal of Alloys and Compounds, 735: pp. 2263-2266, (2018).
9
10. Ruidi Li et al. 316L Stainless Steel with Gradient Porosity Fabricated by Selective Laser Melting, Journal of Materials Engineering and Performance, 19: pp. 666-671, (2010).
10
11. I. Yadroitsev et al. Single-track formation in selective laser melting of metal powders, Journal of Materials Processing Technology, 210: pp. 1624–1631, (2010).
11
12. E. Liverani et al. Effect of selective laser melting (SLM) process parameters on microstructure and mechanical properties of 316L austenitic stainless steel, Journal of Materials Processing Technology, 249: pp. 255-263, (2017).
12
13. Taban Larimian et al. Effect of energy density and scanning strategy on densification, microstructure and mechanical properties of 316L stainless steel processed via selective laser melting, Materials Science and Engineering: A, 770: pp. 138455, (2020).
13
14. Jiangwei Liu et al. Effect of scanning speed on the microstructure and mechanical behavior of 316L stainless steel fabricated by selective laser melting, Materials & Design. 186: pp. 108355, (2020).
14
15. J. A. Cherry et al. Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting, The International Journal of Advanced Manufacturing Technology. 76(5): pp. 869-879, (2015).
15
16. Shi Wentian et al. Properties of 316L formed by a 400W power laser Selective Laser melting with 250μm layer thickness, Powder Technology. 360: pp. 151-164, (2020).
16
17. G. Miranda et al. Predictive models for physical and mechanical properties of 316L stainless steel produced by selective laser melting, Materials Science and Engineering: A, 657: pp. 43-56, (2016).
17
18. M. O. Sklyar et al. Microstructure of 316L stainless steel components produced by direct laser deposition, Steel in Translation. 46: pp. 883-887, (2016).
18
19. L. Hitzler, M. Merkel, A Review of Metal Fabricated with Laser- and Powder-Bed Based Additive Manufacturing Techniques: Process,Nomenclature, Materials, Achievable Properties, and its Utilization in the Medical Sector. Advanced engineering materials, (2018).
19
20. D. Wang, et al. Investigation of crystal growth mechanism during selective laser melting and mechanical property characterization of 316L, Materials and Design, 100: pp. 291–299, (2016).
20
ORIGINAL_ARTICLE
Evaluation of fast fission factor in a typical pool type research reactor
One of the important factors of a nuclear reactor core is the fast fission factor. This paper calculates this parameter based on space and energy-dependent method using the PTRAC card of MCNPX code. Tehran research reactor (TRR) is taken as a case study, and the parameter analyses are performed on the reactor core. Fast fission factor in TRR is evaluated regarding temperature effect, control rod positions, and fuel assembly positions. Using the PTRAC card, helpful information on fast fission factors is achieved throughout the reactor core. One MCNPX runs to return a data file about neutron interaction that can be analyzed many times in different manners to reveal this useful information. The method is simple and can be applied to any nuclear reactor core. The results obtained by this method can help nuclear reactor designers and nuclear reactor fuel managers to have a precise evaluation of the parameter. The method proposed in this paper for fast fission factor calculation is compared with the results previously published in the literature.
https://jonra.nstri.ir/article_1335_8b5af7f5c8f60066d1ed5e27b77f72a5.pdf
2022-01-01
18
29
10.24200/jon.2022.1010
Fast Fission Factor
MCNPX
PTRAC
Tehran Research Reactor
M.
Arkani
markani@aeoi.org.ir
1
Reactor and Nuclear Safety Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
LEAD_AUTHOR
S.
Khakshournia
2
Nuclear Physics and Accelerators Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
AUTHOR
1. Lamarsh, J. R., 1972. Introduction to Nuclear Reactor Theory. Addison-Wesley Publishing Company.
1
2. M. Arkani, H. Khalafi, M.R. Eskandari, Fast fission factor calculation using Monte Carlo method, Progress in Nuclear Energy 54 (2012) 167-170.
2
3. Henry, A. F., 1975. Nuclear-Reactor Analysis, The MIT Press.
3
4. Shi, Y. Q., Li, Y. G., 2001. Measurement of fast fission factor for Heavy Water Zero Power Reactor (HWZPR) by solid state nuclear track detector. Radiation Measurements 34, 605-607.
4
5. A. H. Futch Jr., 1959. Fast Fission Effect in Lattices of Natural Uranium and Heavy Water, Nuclear Science and Engineering, 5:1, 61-67.
5
6. Denis V. Grishko, Arian V. Kuzmin, Dmitry Y. Malishev, 2014. Calculation methodology of fast fission factor in a thermal reactor, MATEC Web of Conferences, 19, 01021, DOI: 10.1051/matecconf/20141901021.
6
7. G. Maracci, F. Rustichelli, 1967. Fast fission ratios in natural uranium cluster heavy water lattices, Journal of Nuclear Energy, 21(11), Pages 857-865.
7
8. C. B. Besant, S.S. Ipson, 1970. Measurement of fission ratios in zero power reactors using solid-state track recorders, Journal of Nuclear Energy, 24(2), Pages 59-69.
8
9. Stefanovic, D.B., 1968. Multigroup fast fission factor treatment in a thermal reactor lattice. Journal of Nuclear Energy 22 (6), 329-336.
9
10. Erdik, E., 1961. The experimental determination of fast fission factors in light water moderated, slightly enriched uranium rod lattices. Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology 15 (2-3), 98-101.
10
11. Pelowitz, D. B., 2008. MCNPX TM 2.6.0, User´s Manual, Version 2.6.0, Los Alamos National Laboratory, LA-CP-07-1473.
11
12. Tehran Research Reactor Safety Analysis Report, 2011. Safety Analysis Report for Tehran Research Reactor, Atomic Energy Organization of Iran (AEOI).
12
13. Mathworks, 2018. MATLAB Reference Guide. The Math Works Inc.
13
ORIGINAL_ARTICLE
Effect of fabric electron radiation on increasing the antibacterial coating and perfume longevity
In this paper, we studied the effect of electron beam irradiation on the fabric to increase longevity of antibacterial coating and perfume release and measure it using the optical properties of the fabric. In other words, instead of using chemical compounds in the antibacterial coating and perfume structure, the change in the structural properties of the fabric as a substrate of antibacterial coating and perfume was examined. Three different types of fabrics, including fabric with polyester and cotton, fabric with felt and flannelette, and fabric with flannelette and cotton floss were irradiated at different doses without alcohol and in the presence of alcohol (96% ethanol) at an energy of 10 MeV with an electron beam of the Rhodotron accelerator TT200. Then, these three types of fabrics were impregnated with antibacterial coating and perfume after washing with cold water. Finally, the longevity of antibacterial coating and perfume on them was measured by using the Particle Density Reflection Parameters and He-Ne laser with a wavelength of 632 nm and a power of 5 mW. Experimental results showed that electron beam irradiation of the fabric in the presence of alcohol enhanced this property.
https://jonra.nstri.ir/article_1336_6c5049c72dfd2d21a997b2667e810865.pdf
2022-01-01
30
44
10.24200/jon.2022.1011
Antibacterial coating and antibacterial coating and perfume longevity
Electron beam irradiation
He-Ne laser
Aromatic fabric absorption coefficient
M.
Askarbioki
1
Atomic & Molecular Group, Physics Factually, Yazd University, Yazd, Iran
AUTHOR
M. B.
Zarandi
2
Atomic & Molecular Group, Physics Factually, Yazd University, Yazd, Iran
AUTHOR
S.
khakshournia
skhakshour@aeoi.org.ir
3
Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
LEAD_AUTHOR
S. P.
Shirmardi
4
Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
AUTHOR
S.
Kargar
5
Department of General Surgery, Shahid Sdoughi Hospital, Shahid Sdoughi University of Medical Sciences, Yazd, Iran
AUTHOR
A.
Amooee
6
Department of General Surgery, Shahid Sdoughi Hospital, Shahid Sdoughi University of Medical Sciences, Yazd, Iran
AUTHOR
M.
Sharifian
7
Atomic & Molecular Group, Physics Factually, Yazd University, Yazd, Iran
AUTHOR
S.
Ghafoorzadeh
8
Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
AUTHOR
1. Kuhnt, T., et al., Functionalized cellulose nanocrystals as nanocarriers for sustained fragrance release. Polymer Chemistry, 2015. 6(36): p. 6553-6562.
1
2. Frérot, E., K. Herbal, and A. Herrmann, Controlled Stepwise Release of Fragrance Alcohols from Dendrimer‐Based 2‐Carbamoylbenzoates by Neighbouring Group Participation. European Journal of Organic Chemistry, 2003. 2003(6): p. 967-971.
2
3. Lage Robles, J. and C.G. Bochet, Photochemical release of aldehydes from α-acetoxy nitroveratryl ethers. Organic letters, 2005. 7(16): p. 3545-3547.
3
4. Soottitantawat, A., et al., Microencapsulation of l-menthol by spray drying and its release characteristics. Innovative Food Science & Emerging Technologies, 2005. 6(2): p. 163-170.
4
5. Levrand, B., et al., Controlled release of volatile aldehydes and ketones by reversible hydrazone formation - "classical" profragrances are getting dynamic. Chemical Communications, 2006(28): p. 2965-2967.
5
6. Feczkó, T., V. Kokol, and B. Voncina, Preparation and characterization of ethylcellulose-based microcapsules for sustaining release of a model fragrance. Macromolecular research, 2010. 18(7): p. 636-640.
6
7. Sansukcharearnpon, A., et al., High loading fragrance encapsulation based on a polymer-blend: preparation and release behavior. International journal of pharmaceutics, 2010. 391(1): p. 267-273.
7
8. Tzhayik, O., A. Cavaco-Paulo, and A. Gedanken, Fragrance release profile from sonochemically prepared protein microsphere containers. Ultrasonics sonochemistry, 2012. 19(4): p. 858-863.
8
9. Ciobanu, A., et al., Cyclodextrin-intercalated layered double hydroxides for fragrance release. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2013. 75(3-4): p. 333-339.
9
10. Vaughn, J., et al., Encapsulated recyclable porous materials: an effective moisture-triggered fragrance release system. Chemical Communications, 2013. 49(51): p. 5724-5726.
10
11. Ferrero Vallana, F.M., et al., Ionic liquids as modulators of fragrance release in consumer goods. New Journal of Chemistry, 2016. 40(12): p. 9958-9967.
11
12. Li, Y., et al., Heat‐resistant sustained‐release fragrance microcapsules. Journal of Applied Polymer Science, 2014. 131(7).
12
13. Li, Y., et al., Comparison of Release Behaviors of Fragrance/Hydroxypropyl-β-cyclodextrin Inclusion Complex and Fragrance Microcapsules. Integrated Ferroelectrics, 2014. 152(1): p. 81-89.
13
14. Liu, C. and K. Hayashi, Visualization of controlled fragrance release from cyclodextrin inclusion complexes by fluorescence imaging. Flavour and Fragrance Journal, 2014. 29(6): p. 356-363.
14
15. Kuhnt, T., et al., Controlled fragrance release from galactose-based pro-fragrances. RSC Advances, 2014. 4(92): p. 50882-50890.
15
16. Cao, Z., et al., Synthesis of fragrance/silica nanocapsules through a sol–gel process in miniemulsions and their application as aromatic finishing agents. Colloid and Polymer Science, 2015. 293(4): p. 1129-1139.
16
17. Hosseinkhani, B., et al., Novel biocompatible nanocapsules for slow release of fragrances on the human skin. New biotechnology, 2015. 32(1): p. 40-46.
17
18. Uhde, E. and N. Schulz, Impact of room fragrance products on indoor air quality. Atmospheric Environment, 2015. 106: p. 492-502.
18
19. Sánchez‐Navarro, M.M., et al., Scent properties by natural fragrance microencapsulation for footwear applications. Polymer International, 2015. 64(10): p. 1458-1464.
19
20. Tylkowski, B., et al. Photo‐Triggered Microcapsules. in Macromolecular Symposia. 2016. Wiley Online Library.
20
21. Lee, H., et al., Encapsulation and enhanced retention of fragrance in polymer microcapsules. ACS applied materials & interfaces, 2016. 8(6): p. 4007-4013.
21
22. Bashari, A., N. Hemmatinejad, and A. Pourjavadi, Smart and Fragrant Garment via Surface Modification of Cotton Fabric With Cinnamon Oil/Stimuli Responsive PNIPAAm/Chitosan Nano Hydrogels. IEEE transactions on nanobioscience, 2017. 16(6): p. 455-462.
22
23. Rubio, O.D., et al., Anti-odour and antibacterial fabric in textile goods. 2018, Google Patents.
23
24. Ega, S.K., S.K. Ghosh, and B. Mallik, Nano-particulate capsules and emulsions thereof including fragrance by emulsion polymerization. 2017, Google Patents.
24
25. Chen, J., Y.-C. Nho, and J.-S. Park, Grafting polymerization of acrylic acid onto preirradiated polypropylene fabric. Radiation Physics and Chemistry, 1998. 52(1-6): p. 201-206.
25
26. Kumar, V., et al., Radiation-induced grafting of vinylbenzyltrimethylammonium chloride (VBT) onto cotton fabric and study of its anti-bacterial activities. Radiation Physics and Chemistry, 2005. 73(3): p. 175-182.
26
27. Yang, J.M., et al., Wettability and antibacterial assessment of chitosan containing radiation‐induced graft nonwoven fabric of polypropylene‐g‐acrylic acid. Journal of Applied Polymer Science, 2003. 90(5): p. 1331-1336.
27
28. Kavaklı, P.A., et al., Radiation‐induced graft polymerization of glycidyl methacrylate onto PE/PP nonwoven fabric and its modification toward enhanced amidoximation. Journal of applied polymer science, 2007. 105(3): p. 1551-1558.
28
29. Blouin, F.A. and J.C. Arthur Jr, The effects of gamma radiation on cotton: Part I: some of the properties of purified cotton irradiated in oxygen and nitrogen atmospheres. Textile Research Journal, 1958. 28(3): p. 198-204.
29
30. Demint, R.J. and J.C. Arthur Jr, the effects of gamma radiation on cotton: Part III: base exchange properties of irradiated cotton. Textile Research Journal, 1959. 29(3): p. 276-278.
30
31. Blouin, F.A. and J.G. Arthur Jr, The Effects of Gamma Radiation on Cotton: Part V: Post-Irradiation Reactions. Textile Research Journal, 1963. 33(9): p. 727-738.
31
32. Reinhardt, R.M. and J.A. Harris, Ultraviolet Radiation in Treatments for Imparting Functional Properties to Cotton Textiles 1. Textile Research Journal, 1980. 50(3): p. 139-147.
32
33. Porter, B.R., et al., Effects of gamma, high-energy electron, and thermal neutron radiations on the fibrillar structure of cotton fibers. Textile Research Journal, 1960. 30(7): p. 510-520.
33
34. Teszler, O. and H.A. Rutherford, The Effect of Nuclear Radiation on Fibrous Materials: Part I: Dacron Polyester Fiber'1. Textile Research Journal, 1956. 26(10): p. 796-801.
34
35. Södergård, A., Perspectives on modification of aliphatic polyesters by radiation processing. Journal of bioactive and compatible polymers, 2004. 19(6): p. 511-525.
35
36. Hongwang, Q. and G. Huang, Mechanical behaviors of glass/polyester composites after UV radiation. Journal of Composite Materials, 2011. 45(19): p. 1939-1943.
36
37. Lekner, J. and M.C. Dorf, Why some things are darker when wet. Applied Optics, 1988. 27(7): p. 1278-1280.
37
38. Hopkins, D.N., M. Maqbool, and M.S. Islam, Linear attenuation coefficient and buildup factor of MCP-96 alloy for dose accuracy, beam collimation, and radiation protection. Radiological physics and technology, 2012. 5(2): p. 229-236.
38
39. Jongen, Y., et al. First Beam Test Results of the 10 MeV, 100 kW Rhodotron. in Proceedings of EPAC. 1994.
39
40. Defrise, D., et al., Technical status of the first industrial unit of the 10 MeV, 100 kW Rhodotron. Radiation Physics and Chemistry, 1995. 46(4-6): p. 473-476.
40
41. Butler, H., perfumery, in Poucher’s perfumes, cosmetics and soaps. 1993, Springer Science & Business Media. p. 55.
41
42. wikipedia. https://en.wikipedia.org/wiki/Perfume#cite_note-25.
42
43. Crivello, J.V., UV and electron beam-induced cationic polymerization. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999. 151(1-4): p. 8-21.
43
44. Hoffman, G., et al., Water Relations and Growth of Cotton as Influenced by Salinity and Relative Humidity 1. Agronomy Journal, 1971. 63(6): p. 822-826.
44
45. Ashkenani, H., et al., Preconcentration, speciation and determination of ultra-trace amounts of mercury by modified octadecyl silica membrane disk/electron beam irradiation and cold vapor atomic absorption spectrometry. Journal of hazardous materials, 2009. 161(1): p. 276-280
45
ORIGINAL_ARTICLE
Assessment of pollutant elements content in ambient air dust of Khuzestan province
This study aimed to investigate the distribution of natural and anthropogenic pollutants and the enrichment of elements in air dust of Khuzestan province following the dust events. Dust samples were collected from nine regions including, Abadan, Ahvaz, Hoveyzeh, Susangerd, Shush, Omidieh, Ramhormoz, and Mahshahr. The INAA technique measured the concentration of elements. Using the results of PMF modeling and investigation of obtained factors for samples, a suitable reference element with the most negligible influence from pollutant sources was selected and used for EF calculations. The results showed very large enrichments with EF> 20 for elements such as Zn, Se, Br in Susangerd, Ahvaz, and Abadan. The concentrations of Fe, Al, and Mg in some areas of the province were much higher than LC50. The enrichment factors and the correlations between the elements in the samples of various regions showed their dependence on local pollutant sources.
https://jonra.nstri.ir/article_1337_80c4cc8945ca1368458cabb53746e93c.pdf
2022-01-01
45
60
10.24200/jon.2022.1012
Dust
Enrichment Factor
LC50
Pollutants
INAA
Z.
Akbari
1
Physics & Accelerators Research School, Nuclear Science and Technology Research Institute, 14395-836 Tehran, Iran
AUTHOR
O.
Kakaouee
okakuee@aeoi.org.ir
2
Physics & Accelerators Research School, Nuclear Science and Technology Research Institute, 14395-836 Tehran, Iran
LEAD_AUTHOR
R.
Shahbazi
3
Director Management of Geohazards, Engineering and Environmental Geology, Tehran, Iran
AUTHOR
J.
Darvishi Khatooni
4
Geological Survey of Iran
AUTHOR
M.
Mashal
5
Geological Survey of Iran, Southwestern Area (Ahvaz Center), Ahvaz, Iran
AUTHOR
1. A. S. Goudie and N. J. Middleton, Desert Dust in the Global System, Springer, Berlin, Heidelberg, 1th ed., 2006.
1
2. D. Francis, The dust load and radiative impact associated with the June 2020 historical Saharan dust storm, Atmos. Environ, 268, 118808 (2020)
2
3. P. Kulkarni, S. Chellam and M.P. Fraser, Lanthanum, and Lanthanides in Atmospheric Fine Particles and Their Apportionment to Refinery and Petrochemical Operations in Houston, TX, Atmos. Environ, 40(3), 508 (2006).
3
4. L. Gandois et al, Use of Geochemical Signatures, Including Rare Earth Elements, in Mosses and Lichens to Assess Spatial Integration and the Influence of Forest Environment, Atmos. Environ. 95, 96 (2014).
4
5. J.M. Lim et al,. Source apportionment of PM10 at a small industrial area using Positive Matrix Factorization, Atmos. Environ. 95 (1), 88 (2010).
5
6. P.G. Stegmann and P. Yang, A Regional, Size-Dependent, and Causal Effective Medium Model for Asian and Saharan Mineral Dust Refractive Index Spectra, J. Aero. Sci., 14, 327 (2017).
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ORIGINAL_ARTICLE
Study on type-testing of a manual TLD-reader for dosimetry programs
In a radiation individual monitoring program, the type testing of measuring devices is a great important part of the quality management system. The IEC-62387 standard applies to dosimetry systems that measure external photon and/or beta radiation within limited ranges of the associated physical parameters. In this work, a type-testing program was conducted for a manual thermoluminescence dosimetry (TLD) reader employing the IEC-62387 radiation and environmental performance criteria. The uncertainty of non-linearity of the response of the dosimetry system in a range of 0.7-850 mSv was obtained between -15% and + 17%, which fulfilled the IEC standard range of -16% to +18%. Furthermore, the total uncertainty of all reader tests was measured to be 12%, which was less than the criteria of 20% in the IEC standard. Thus, it can be concluded that the TLD reader met all requirements of the IEC standard for the reader-tests by an appropriate margin.
https://jonra.nstri.ir/article_1338_f9c944c2ae1a618511054c06c457651a.pdf
2022-01-01
61
67
10.24200/jon.2022.1013
TLD reader
IEC
Type Test
Radiation
Standard
S.M.
Hosseini Pooya
mhosseini@aeoi.org.ir
1
Radiation Applications Research School, Nuclear Science & Technology Research Institute, Tehran, Iran
LEAD_AUTHOR
P.
Rezaeian
2
Radiation Applications Research School, Nuclear Science & Technology Research Institute, Tehran, Iran
AUTHOR
E.
Edalatkhah
3
Radiation Applications Research School, Nuclear Science & Technology Research Institute, Tehran, Iran
AUTHOR
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