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Significance of the second dip in the ultra-high energy cosmic ray spectrum

100%
Wibig T.
Open Physics
|
2007
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vol. 5
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issue 4
528-538
EN
A new feature in the spectrum of ultra high energy cosmic rays (UHECR) has been announced in the paper by Berezinsky, Gazizov and Kachelrieβ. The ratio of the solution of the exact transport equation to its solution in the continuous energy loss limit shows intriguing features which, according to the Authors, are related to the very nature of the energy loss processes of UHECR: the very sharp second dip predicted at 6.3 × 1019 eV can be used as an energy calibration point and also as the UHECR mass indicator for big future cosmic ray experiments. In the present paper we would like to advocate that this statement is an overinterpretation. The second dip is a result of an inappropriate approximation used, and thus it cannot help to understand the nature of UHECR in any way.
2
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Propagation of EEG activity during continuous attention test

100%
Kuś R., Blinowska K. J., Kamiński M., Basińska-Starzycka A.
Bulletin of the Polish Academy of Sciences: Technical Sciences
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2005
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vol. 53
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issue 3
3
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Impact of soil amendments on the early growth of Streculia setigera Del. in the nursery

88%
Buochuama A., Akhabue E. F.
|
EN
There exists an inadequate research on the propagation and nutrient needs of most tropical tree species. Hence, this work involves the developmental impact of soil amendments on the early growth of Streculia setigera Del. in the nursery. Different soil amendments; poultry waste (F1), goat manure (F2), cow manure (F3) and the control, normal soil (F4) were applied to several viable seeds of Streculia setigera in the nursery. The seeds were subjected to the same routine nursery practices. The experiment was laid in a Completely Randomized Design (CRD) and lasted for ninety (90) days. Descriptive statistics and ANOVA were used in the data analysis. The findings revealed that the entire growth response of Streculia setigera seedlings were only sparely affected by the soil amendments (P<0.05). F3 was found to be the most preferred soil amendment for this species, followed by F2 and F4 consecutively. The result obtained from F1 was very poor and thus it is not ideal for this species.
4
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Cycles in Bayesian Networks

75%
Shayakhmetova A., Litvinenko N., Mamyrbayev O., Wójcik W., Zhamangarin D., Shayakhmetova A., Litvinenko N., Mamyrbayev O., Wójcik W., Zhamangarin D.
International Journal of Electronics and Telecommunications
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2021
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vol. 67
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issue 2
5
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A Statistical Calibration Method of Propagation Prediction Model Based on Measurement Results

75%
Kelner J. M., Kryk M., Łopatka J., Gajewski P., Kelner J. M., Kryk M., Łopatka J., Gajewski P.
International Journal of Electronics and Telecommunications
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2020
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vol. 66
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issue 1
6
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On wave propagation in a random micropolar generalized thermoelastic medium

75%
Mitra M., Bhattacharyya R. K.
Archives of Thermodynamics
|
2017
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issue 2
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