Search Results

You are looking at 1 - 10 of 11 items for :

  • physical tests x
  • Nuclear Chemistry x
Clear All
Open access

Paweł Ramos, Piotr Pepliński and Barbara Pilawa


Free radicals formed during thermal sterilization of eucerinum anhydricum – the pharmaceutical base were examined by an X-band (9.3 GHz) spectrometer. Eucerinum anhydricum was sterilized at different physical conditions according to the Polish Pharmacopeia norms. The samples were heated at temperatures: 160°C (120 min), 170°C (60 min), and 180°C (30 min). The aim of this study is to compare free radical concentration and effect of microwave power on EPR spectra of eucerinum anhydricum base thermally sterilized at different temperatures and periods of time. The effect of time storage on the free radicals in the heated samples was tested. Free radical concentrations in the sample stored 15 min strongly decreased with the increasing of sterilization temperature, probably as the result of recombination. Storage caused strong decrease of free radical concentrations in the samples, probably as the result of interactions with oxygen. It was observed to be independent of sterilization conditions from 2 days of storage and longer. Because of the lowest free radical concentration, for eucerinum anhydricum thermal sterilization at 180°C for 30 min is recommended. The sterilized samples should be stored at inert atmosphere without oxygen molecules. Fast spin-lattice relaxation processes existed in sterilized eucerinum anhydricum. The character of changes of amplitudes and linewidths of EPR lines with increasing of microwave power was the same for different storage times. The parameters of thermal sterilization and storage time influenced free radical concentration in eucerinum anhydricum, but magnetic spin-lattice interactions were unchanged. The usefulness of EPR spectroscopy in optimization of thermal sterilization process of eucerinum anhydricum was confirmed.

Open access

Ewa Fabiszewska, Iwona Grabska and Katarzyna Pasicz

of software for reading images of the CDMAM test object to assess digital mammography systems. In K. C. Young, A. Alsager, J. M. Oduko, H. Bosmans, B. Verbrugge, T. Geertse, & R. van Engen (Eds.), Medical Imaging 2008: Physics of medical imaging . Proceedings of SPIE (vol. 69131C). DOI: 10.1117/12.770571. 8. Van Metter, R., Heath, M., & Fletcher-Heath, L. (2006). Applying the European protocol for the quality control of the physical and technical aspects of mammography screening threshold contrast visibility assessment to digital systems. In M. J. Flynn, & J

Open access

Farahnaz Saadatian-derakhshandeh, Omid Safarzadeh and Amir Saiid Shirani

References 1. Lee, E. K., Shin, H. C., Bae, S. M., & Lee, Y. K. (2005). New dynamic method to measure rod worths in zero power physics test at PWR startup. Ann. Nucl. Energy , 32 , 1457-1475. 2. Shimazu, Y., Okazaki, K., & Tsuji, M. (2006). Feasibility study for evaluation of control rod worth in pressurized water reactors using neutron count rate during a control rod drop testing. Nucl. Sci. Technol. , 43 , 919-923. 3. Kalcheva, S., & Koonen, E. (2009). Improved Monte Carlo-Perturbation method for estimation of control rod worths in a research

Open access

Lucyna Samek, Leszek Furman, Tomasz Kawik and Kinga Welnogorska

particulate matter- -reference method and field test procedure to demonstrate reference equivalence of measurement methods. 11. PN-EN 14907:2006b: Ambient air quality - Standard gravimetric measurement method for the determination of the PM2.5 mass fraction of suspended particular matter. 12. Vekemans, B., Janssens, K., Vincze, L., Adams, F., & Van Espen, P. (1994). Analysis of X-ray spectra by iterative least squares (AXIL): new developments. X-Ray Spectrom., 23, 278-285. 13. Rogula-Kozlowska, W., Klejnowski, K., Zwozdziak, A

Open access

Stefania Baccaro and Alessia Cemmi

, 763 , 012001. DOI: 10.1088/1742-6596/763/1/012001. 4. Mihokova, E., Nikl, M., Pejchal, J., Baccaro, S., Cecilia, A., Nejezchleb, K., & Vedda, A. (2007). Luminescence and scintillation properties of Y 3 Al 5 O 12 :Pr single crystal. Phys. Status Solidi C , 4 (3), 1012–1015. DOI: 10.1002/pssc.200673710. 5. Angelucci, M., Atanova, O., Baccaro, S., Cemmi, A., Cordelli, M., Donghia, R., Giovannella, S., Happacher, F., Miscetti, S., Sarra, I., & Soleti, S. R. (2016). Longitudinal uniformity, time performances and irradiation test of pure CsI crystals. Nucl

Open access

Ioan Valentin Moise, Mihaela Ene, Constantin Daniel Negut, Mihalis Cutrubinis and Maria Mihaela Manea

. Preserv. Libr. Arch. Mater. , 19 , 41–59. . 4. Adamo, M., Brizzi, M., Magaudda, G., Martinelli, G., Plossi-Zappalà, M., Rocchetti, F., & Savagnone, F. (2001). Gamma radiation treatment of paper in different environmental conditions: Chemical, physical and microbiological analysis. Restaur.-Int. J. Preserv. Libr. Arch. Mater. , 22 , 107–131. DOI: 10.1515/REST.2001.107. 5. Adamo, M., Magaudda, G., Trionfetti Nisini, P., & Tronelli, G. (2003). Susceptibility of cellulose to attack by cellulolytic microfungi after

Open access

Sanduni Y. Ratnayake, Anoma K. Ratnayake, Dieter Schild, Edward Maczka, Elzbieta Jartych, Johannes Luetzenkirchen, Marek Kosmulski and Rohan Weerasooriya

. Toxicol. Environ. Chem. , 36 , 131–137. 5. Guter, G. (1995). Nitrate removal from contaminated groundwater by anion exchange. In A. K. Sengupta (Ed.), Ion exchange technology: Advances in pollution control (pp. 61–113). Lancaster, PA: Technomic Publishing Co. Inc. 6. Mercado, A., Libhaber, M., & Soares, M. I. M. (1988). In situ biological groundwater denitrification: Concepts and preliminary field tests. Water Sci. Technol ., 20 , 197–209. 7. Bhatnagar, A., & Sillanpaa, M. (2011). A review of emerging adsorbents for nitrate removal from water

Open access

Hyam Nazmy Khalaf, Mostafa Y. A. Mostafa and Michael Zhukovsky

physical conditions. J. Radioanal. Nucl. Chem . . 24. Vasyanovich, M., Mostafa, M. Y. A., & Zhukovsky, M. (2017). Ultrafine aerosol influence on the sampling by cascade impactor. Radiat. Prot. Dosim. , 177 (1/2), 49–52. 25. Nazaroff, W. W. (1980). An improved technique for measuring working level of radon daughters in residences. Health Phys ., 45 , 509–523. 26. Mostafa, Y. A. M., Vasyanovich, M., & Zhukovsky, M. (2016). Prototype of a primary calibration system for measurement of radon activity

Open access

Neha Gupta Sharma, Michał Silarski, Tomasz Bednarski, Piotr Białas, Eryk Czerwiński, Aleksander Gajos, Marek Gorgol, Bożena Jasińska, Daria Kamińska, Łukasz Kapłon, Grzegorz Korcyl, Paweł Kowalski, Tomasz Kozik, Wojciech Krzemień, Ewelina Kubicz, Szymon Niedźwiecki, Marek Pałka, Lech Raczyński, Zbigniew Rudy, Oleksandr Rundel, Artur Słomski, Adam Strzelecki, Anna Wieczorek, Wojciech Wiślicki, Marcin Zieliński, Bożena Zgardzińska and Paweł Moskal

., Raczyński, L., Rudy, Z., Salabura, P., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., & Wiślicki, W. (2014). Test of a single module of the J-PET scanner based on plastic scintillators. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. , 764 , 317–321. DOI: 10.1016/j.nima.2014.07.052. [arXiv:1407.7395]. 6. Kowalski, P., Moskal, P., Wiślicki, W., Raczyński, L., Bednarski, T., Białas, P., Bułka, J., Czerwiński, E., Gajos, A., Gruntowski, A., Kamińska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kozik, T., Krzemień

Open access

Berit Väli, Tõnu Laas, Jana Paju, Veroonika Shirokova, Marian Paduch, Vladimir A. Gribkov, Elena V. Demina, Valeri N. Pimenov, Vadym A. Makhlaj and Maksim Antonov

., & Zoita, V. (1998). Scientific status of plasma focus research. J. Moscow Phys. Soc., 8, 93-170. 16. Gribkov, V. A. (2015). Physical processes taking place in dense plasma focus devices at the interaction of hot plasma and fast ion streams with materials under test. Plasma Phys. Contr. Fusion, 57, 065010. 17. Pimenov, V. N., Demina, E. V., Maslyaev, S. A., Ivanov, L. I., Gribkov, V. A., Dubrovsky, A. V., Ugaste, U., Laas, T., Scholz, M., Miklaszewski, R., Kolman, B., & Tartari, A. (2008). Damage and modifi cation of materials produced by