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Adil Rashid, Tariq Rashid Jan, Akhtar Hussain Bhat and Z. Ahmad

References [1] Adamidis, K., and Loukas, S. (1998). A lifetime distribution with decreasing failure rate. Journal of Statistics & Probability Letters, 39, 35-42. [2] Adil, R., Zahoor, A., and Jan, T.R. (2016). A new count data model with application in genetics and ecology. Electronic Journal of Applied Statistical Analysis, 9(1), 213-226 [3] Adil, R., Zahoor, A., and Jan, T.R. (2017). Complementary compound Lindley power series distribution with application. Journal of Reliability and Statistical Studies, 10

Open access

Radosław Zaleski

. Rodriguez-Reinoso, & N. A. Seaton (Eds.), Characterisation of porous solids VIII: Proceedings of the 8th International Symposium on the Characterisation of Porous Solids (pp. 303–310). The Royal Society of Chemistry. 8. Kullmann, J., Enke, D., Thraenert, S., Krause-Rehberg, R., & Inayat, A. (2010). Characterization of nanoporous monoliths using nitrogen adsorption and positronium annihilation lifetime spectroscopy. Colloids Surf. A , 357 (1/3), 17–20. DOI: 10.1016/j.colsurfa.2009.09.030. 9. Zaleski, R., Stefaniak, W., Maciejewska, M., & Goworek, J. (2009

Open access

Vasilis Pagonis and Reuven Chen

Simulation of OSL Pulse-Annealing at Different Heating Rates: Conclusions Concerning the Evaluated Trapping Parameters and Lifetimes

Pulse annealing has been the subject of several studies in recent years. In its basic form, it consists of relatively short-time optically stimulated luminescence (OSL) measurements of a given sample after annealing at successively higher temperatures in, say, 10°C increments. The result is a decreasing function with a maximum OSL at low temperatures and gradually decreasing to zero at high temperature. Another presentation is that of the percentage OSL signal lost per annealing phase, associated with minus the derivative of the former curve, which yields a thermoluminescence (TL)-like peak. When the heating is performed at different heating rates, the TL various heating rates (VHR) method can be utilized to evaluate the trapping parameters. Further research yielded more complex pulse-annealing results in quartz, explained to be associated with the hole reservoir. In the present work, we simulate numerically the effect, following the experimental steps, in the simpler form when no reservoir is involved, and in the more complex case where the reservoir plays an important role. The shapes of the reduction-rate curves resemble the experimental ones. The activation energies found by the VHR method are very close to the inserted ones when the retrapping probability is small, and deviate from them when retrapping is strong. The theoretical reasons for this deviation are discussed.

Open access

Marek Gorgol, Bożena Jasińska and Renata Reisfeld

–407). Cambridge: RSC Publishing. DOI: 10.1039/9781847559418-00400. 5. Fischer, C. G., Weber, M. H., Wang, C. L., McNeil, S. P., & Lynn, K. (2005). Positronium in low temperature mesoporous films. Phys. Rev. B , 71 (18), 180102. DOI: 10.1103/PhysRevB.71.180102. 6. Śniegocka, M., Jasińska, B., Zaleski, R., & Goworek, T. (2006). Temperature dependence of o-Ps lifetime in some porous media. Deviation from ETE model. Chem. Phys. Lett ., 430 , 351–354. DOI: 10.1016/j.cplett.2006.09.001. 7. Thraenert, S., Hassan, E. M., Enke, D., Fuerst, D., & Krause-Rehberg, R

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

References 1. Eldrup, M., Lightbody, D., & Sherwood, J. N. (1981). The temperature dependence of positron lifetimes in solid pivalic acid. Chem. Phys ., 63 , 51–58. DOI: 10.1016/0301-0104(81)80307-2. 2. Tao, S. (1972). Positronium annihilation in molecular substances. J. Chem. Phys ., 56 , 5499–5510. 3. Gidley, D. W., Frieze, W. E., Dull, T. L., Yee, A. F., Ryan, E. T., & Ho, H. -M. (1999). Positronium annihilation in mesoporous thin films. Phys. Rev. B , 60 , R5157(R). DOI: 10.1103/PhysRevB.60.R5157. 4. Goworek, T., Ciesielski, K

Open access

G. Preduşcă and C. Fluieraru

Abstract

If the electrons and holes in excess are created in a semiconductor, either by means of light absorption, or using other methods, the thermic balance is disturbed, therefore these electrons and holes should be nullified after the source had been stopped. This process is named recombination. There are three main recombination types: radioactive, Auger and deep energy level recombination. All three are based on the doping concentration to a certain point. The life time is determined using the three recombination processes in semiconductor.

Open access

Zygmunt Litwińczuk, Paweł Żółkiewski, Witold Chabuz and Przemysław Jankowski

persistencies from producer-recorded health data and test-day yields. J. Dairy Sci., 92: 1785–1795. Archer S.C., McCoy F., Wapenaar W., Green M.J. (2013). Association between somatic cell count early in the first lactation and the lifetime milk yield of cows in Irish dairy herds. J. Dairy Sci., 96: 2951–2959. Archer S.C., McCoy F., Wapenaar W., Green M.J. (2014). Bayesian evaluation of budgets for endemic disease control: An example using management changes to reduce milk somatic cell count early in the first lactation of Irish dairy cows. Prev. Vet. Med., 113: 80

Open access

Bożena Łowkis

Abstract

This paper presents three physical sources of the electric field in dielectrics: excess free volume charges with the distribution qv(x,y,z), free surface charges with the distribution qs(x,y,z) and frozen polarization state in the dielectric. They have a deciding influence on the parameters of the electret, in particular they determine the total lifetime of the electret and technical components made of it. The indeterminacy related to the mutual proportions of the spatial and surface charges was discussed: one can find an infinite number of distributions of surface qse(x,y,z) and spatial qve(x,y,z) charges leading to the same distribution of the electric field E(x,y,z). A general case of electret was considered, where a coexistence of relaxation decay of frozen polarization and Maxwellian relaxation dependent on volume conductivity of the dielectric is assumed. An attempt to interpret the charge lifetime in real electrets was made.

Open access

Miroslava Ťavodová, Daniela Kalincová, Martin Kotus and Ľubomír Pavlík

/0826/15, scientific peer-reviewed collection, pp. 80-89. ISBN 978-80-228-2920-5. MÜLLER, M. - HRABĚ, P. 2013. Overlay materials used for increasing lifetime of machine parts working under conditions of intensive abrasion. In Research in Agricultural Engineering, vol. 59, no. 1, pp. 16-22. STN 01 5084. 1974. Determination of metal material resistance against wear by abrasive cloth. SÚTN Bratislava. STN 41 4220. 1976 Manganese-chromium steel 14 220. SÚTN Bratislava. STN EN ISO 148-1. 2017 Metallic materials - Charpy

Open access

Niusha Safarpour and Ilkka Sillanpää

References [1] Kothandaraman P., Wilson D.T., The future of competition: value-creating networks , Industrial Marketing Management, 30, 379–389, 2011. [2] Chesbrough H., Rosenbloom R.S., The role of the business model in capturing value from innovation: evidence from Xerox corporation’s technology spin-off companies , Industrial and Corporate Change, 11, 3, 529–555, 2002. [3] Drucker P.F, Innovation and Entrepreneurship , Butterworth Heinemann, 2007. [4] Jain D., Singh S.S., Customer lifetime value research in marketing: a review and